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Driest States in the US

Welcome to my blog about driest states in the US!

Climate change is expected to make the southwestern US even drier in the future. This is due to a number of factors, including the region’s location in the lee of the Sierra Nevada mountains, which block moisture from the Pacific Ocean from reaching the southwest. Further reasons are the region’s distance from the Gulf of Mexico, which is a source of moisture for other parts of the country and the region’s general lack of rainfall.

The southwest of the US is located in the so-called “rain shadow” of the Sierra Nevada and Rocky Mountains. These mountain ranges block moisture-laden air masses from reaching the southwest, resulting in less rainfall. Additionally, the southwest is located in a subtropical high pressure zone, which inhibits the development of rain-producing storms. 

As the planet warms, the subtropical high pressure zone is projected to expand northward, further inhibiting the development of storms and leading to even less rainfall. Additionally, warmer temperatures will lead to more evaporation, which will further decrease the amount of water available in the region. These changes will put additional stress on already scarce water resources in the southwest, and will likely have a negative impact on agriculture in the region.

So let’s get started and enjoy the article about driest states in the US!

13 Driest States in the US

The 13 driest states in the US are:

1. Arizona

Saguaro National Park, Arizona
Saguaro National Park, Arizona

With an average of only 12 inches of rain per year, Arizona is the first state in our list of the driest states in the US (not the driest state overall). The state’s low rainfall is due to its location in the rain shadow of the Sierra Nevada and Cascade mountain ranges. The driest part of Arizona is the southwestern corner of the state, which receives less than 8 inches of rain per year.

DaysPlaceInchesMilli­metres
60Bisbee17.1435
69Chiricahua National Monument18.7475
70Coronado National Monument20.8527
58Douglas11.8300
51Green Valley12.9326
65Nogales16.1409
33Organ Pipe Cactus Monument9.3236
51Sierra Vista13.0330
53Tombstone13.2336
47Tucson10.6269
Southern Arizona – Average yearly precipitation (Source currentresults)

2. California

California
View California

California is a driest state in the US, with an average of only 10 inches of rain per year. Most of the state’s rain falls in the northern part of the state, while the southern part of the state is much drier. The driest region in California is the Mojave Desert, which receives less than 5 inches of rain per year.

DaysPlaceInchesMilli­metres
38Bakersfield6.4162
13El Centro2.564
42Hanford8.5216
28Lancaster6.8173
34Oceanside10.3261
27Palmdale7.3186
31Pomona14.5368
35Riverside9.4239
40San Diego9.8249
25Victorville5.6141
40Visalia10.3262
Southern California – Average yearly precipitation (Source currentresults)

3. Colorado

Welcome to the colorful Coloradao
Welcome to the colorful Coloradao

Colorado is a semi-arid state, with an average of only 15 inches of rain per year. Most of the state’s rain falls in the mountains, while the eastern plains are much drier. The driest part of Colorado is the southwestern corner of the state, which receives less than 10 inches of rain per year.

DaysPlaceInchesMilli­metres
101Boulder21.2539
65Burlington19.3489
81Canon City 13.7348
87Colorado Springs15.9404
84Denver15.4390
113Estes Park17.4442
84Florissant Fossil Beds Monument15.0380
86Fort Collins15.9403
78Great Sand Dunes National Monument12.2310
74Greeley14.7372
81Lakewood17.5446
69Pueblo12.0305
57Sterling15.2387
72Trinidad14.9378
Front Range & Eastern Colorado – Annual averages for rainfall plus snowfall (Source currentresults)

4. Idaho

Idaho - Driest States in the US
Idaho – Driest States in the US

Idaho’s dry climate is caused by its location in the rain shadow of the Cascade Mountains. The state receives very little precipitation, and what does fall is often quickly evaporated or absorbed by the dry, sandy soil. This lack of moisture means that Idaho is particularly vulnerable to drought. The effects of climate change are expected to make Idaho’s dry conditions even worse.

Warmer temperatures will lead to more evaporation, and changes in precipitation patterns will result in less rainfall. These conditions will put stress on agriculture and water resources, and could lead to more frequent and longer droughts. Idaho’s dry conditions are already having an impact on its residents.

The state has been experiencing an increased number of wildfires in recent years, and the lack of moisture is making it difficult for farmers to irrigate their crops. With climate change expected to make Idaho even drier, these problems are only expected to get worse.

DaysPlaceInchesMilli­metres
89Boise11.5292
100Brownlee Reservoir Dam14.8377
51Bruneau7.4187
88Idaho City21.1536
72Lake Lowell, Deer Flat Dam10.0254
127McCall25.0634
Southwestern Idaho – Average amount of rain and snow a year (Source currentresults)

5. Montana

Montana
Montana

Montana is one of the driest states in the US. Climate change is expected to make it even drier and warmer in the future. Changes in temperature and precipitation will adversely affect agriculture. And they will contribute to more frequent and longer droughts, putting additional strain on existing water supplies in this part of the country.

Montana’s climate is already arid, with an average of only 16 inches (41 cm) of precipitation per year. Most of this precipitation falls as snow in the mountains, while the rest of the state receives less than 10 inches (25 cm) of rain or snow each year. This lack of moisture, combined with high summer temperatures, makes Montana one of the driest states in the country. Climate change is expected to worsen these conditions.

Average temperatures in Montana are projected to increase by 2-4 degrees Fahrenheit (1-2 degrees Celsius) by the middle of this century, with even higher temperatures possible in the future. This warming will cause more evaporation and reduce the amount of moisture available for precipitation. At the same time, the jet stream is expected to shift northwards in response to Arctic warming. This could bring drier conditions to Montana and other parts of the Northern Plains.

Warmer temperatures will lengthen the growing season, but the lack of moisture will make it difficult for crops to thrive. The state’s water supplies will also be under strain, as demand increases during dry periods.

DaysPlaceInchesMilli­metres
125Anaconda14.9378
138Bozeman20.0509
107Butte12.8324
78Dillon11.3286
118Hebgen Lake Dam28.6727
91Helena11.4290
112Sula16.2412
93Virginia City15.7398
Southwestern Montana – Annual averages for rainfall plus snowfall (Source currentresults)

6. Nevada

The bautiful Nevada
The bautiful Nevada

Nevada is the number one in our list of the driest states in the US, with an average of only 11 inches of rain per year. Most of the state’s rain falls in the mountains, while the western and southern parts of the state are much drier. The driest part of Nevada is the southern tip of the state, which receives less than 5 inches of rain per year.

DaysPlaceInchesMilli­metres
26Callville Bay, Lake Mead5.3134
26Las Vegas4.2106
21Laughlin5.4136
21North Las Vegas4.3108
30Red Rock Canyon State Park9.9252
29Valley of Fire State Park6.3160
Southern Nevada – Average yearly precipitation (Source currentresults)

7. New Mexico

Albuquerque, New Mexico Volcano Desert
Albuquerque, New Mexico Volcano Desert

New Mexico is a semi-arid state, with an average of only 15 inches of rain per year. Most of the state’s rain falls in the mountains, while the eastern and southern plains are much drier. The driest part of New Mexico is the southwestern corner of the state, which receives less than 10 inches of rain per year.

DaysPlaceInchesMilli­metres
56Alamogordo10.6270
53Bitter Lake Wildlife Refuge13.3337
46Carlsbad12.6319
50Carlsbad Caverns National Park13.8350
53Cuba12.8325
45Elephant Butte Lake Dam9.9251
71Gila Hot Springs15.2385
37Hobbs13.8350
47Las Cruces9.1232
51Roswell11.6295
86Ruidoso22.0559
44White Sands National Monument9.8249
Southern New Mexico – Average yearly precipitation (Source currentresults)

8. North Dakota

North Dakota
North Dakota

The state’s average annual precipitation is only 16.8 inches (427 mm), and much of that falls as snow. The state’s low humidity levels and high winds contribute to evaporation, leaving little moisture for plants to grow. The state’s climate is changing, however, and that is likely to make the situation worse.

According to some climatologists, climate change will make this area considerably drier and warmer in the future. Temperature and rainfall changes will negatively influence agriculture and contribute to more frequent and lengthier droughts, putting additional demand on existing water supplies in this part of the country. The state’s population is growing, too, which will only increase the demand for water.

North Dakota’s farmers and ranchers are among the most efficient in the country, but they will be hard-pressed to maintain that level of efficiency in the face of a drier climate. The state’s water resources are already under stress. The Ogallala Aquifer, which supplies water to much of the state, is being depleted at an alarming rate. And many of the state’s lakes and streams are contaminated with agricultural chemicals. If the state’s water resources are not managed carefully, the situation could become dire. North Dakota’s leaders need to start planning now for a future with less water.

DaysPlaceInchesMilli­metres
91Dickinson17.6446
75Kenmare19.5495
86Medora15.8401
77Pretty Rock Wildlife Refuge16.5420
100Williston15.1384
Western North Dakota – Average amount of rain and snow a year (Source currentresults)

9. Oregon

Smith Rock, Oregon - Driest States in the US
Smith Rock, Oregon

Oregon is a wet state, with an average of 37 inches of rain per year. However, much of the state is mountainous, and the eastern part of the state is much drier. The driest part of Oregon is the southeastern corner of the state, which receives less than 20 inches of rain per year.

DaysPlaceInchesMilli­metres
102Heppner13.1332
95La Grande17.4442
77Lake Owyhee Dam8.8223
70Ontario10.0254
100Pendleton12.8326
103Seneca13.7347
107Summer Lake13.1332
Eastern Oregon – Annual precipitation totals (Source currentresults)

10. South Dakota

Badlands National Park, South Dakota
Badlands National Park, South Dakota

We expect climate change to intensify these trends. Projections suggest the state will warm by an additional 3-5 degrees Fahrenheit by the century’s end, and the rainfall is likely to decrease by a further 5-10 percent. These changes will make it even more difficult to grow crops and could lead to even more frequent and severe droughts. The state’s water resources will be under even more pressure as a result. South Dakota is already taking steps to adapt to the changing climate.

The state has developed a statewide water plan that includes strategies for increasing water efficiency, developing new water sources, and managing drought. But it will be a challenge to meet the state’s water needs in the future as the climate continues to change.

DaysPlaceInchesMilli­metres
94Custer20.7525
78Hot Springs18.6473
80Interior19.6498
133Lead31.8807
73Lemmon18.0457
102Mt. Rushmore National Memorial24.1613
103Pactola Reservoir Dam21.5547
79Porcupine19.9505
96Rapid City17.4443
93Spearfish21.4544
88Wind Cave National Park21.2538
Western South Dakota – Average amount of rain and snow a year (Source currentresults)

11. Texas

Texas - Driest States in the US
Texas

Texas is a semi-arid state, with an average of only 25 inches of rain per year. Most of the state’s rain falls in the eastern part of the state, while the western and southern parts of the state are much drier. The driest part of Texas is the northwestern corner of the state, which receives less than 10 inches of rain per year.

DaysPlaceInchesMilli­metres
39Alice27.1687
86Austin36.3921
74Choke Canyon Lake Dam26.5673
54Falcon Lake Dam19.5495
80Fredericksburg30.6776
74Kingsville31.0786
60Laredo19.7500
49Midland13.5343
69New Braunfels33.6853
81San Antonio32.4822
South Central Texas – Annual averages for rainfall plus snowfall (Source currentresults)

12. Utah

Arches National Park, Utah - Driest States in the US
Arches National Park, Utah

Utah’s climate is already arid, and the state receives very little rainfall. The average annual precipitation in Utah is only about 12 inches (30 cm), and much of the state receives even less than that. Because of this, Utah is particularly vulnerable to drought. Droughts are expected to become more frequent and more intense in the future as the climate continues to change. This will put a strain on water supplies, as well as on the agricultural industry. Crops will suffer from the lack of water, and farmers will have to find ways to irrigate their fields.

The state of Utah is already taking steps to prepare for the impacts of climate change. The state has created a Drought Task Force to develop plans for dealing with drought conditions. The Task Force is working on a statewide water conservation plan, as well as on ways to improve water efficiency. Utah is also working to increase its water storage capacity. The state is currently in the process of building a new reservoir, the Bear River development, which will help to meet the state’s future water needs.

Despite these efforts, Utah is still expected to face significant challenges in the future due to climate change. The state will need to continue to find ways to conserve water and to improve its water efficiency.

DaysPlaceInchesMilli­metres
55Arches National Park8.5215
77Bryce Canyon Park Headquarters16.7423
55Canyonlands Park, The Needles8.4212
55Capitol Reef National Park7.9200
58Escalante10.6268
40Glen Canyon, Bullfrog Basin6.4164
58Hovenweep National Monument10.2259
62Moab9.1232
65Natural Bridges National Monument12.0304
Southern Utah’s Canyons – Average amount of rain and snow a year (Source currentresults)

13. Wyoming

Wyoming - Driest States in the US
Wyoming

Wyoming is the last driest state in the US, with an average of only 12 inches of rain per year. Most of the state’s rain falls in the mountains, while the eastern part of the state is much drier. The driest part of Wyoming is the southwestern corner of the state, which receives less than 8 inches of rain per year.

DaysPlaceInchesMilli­metres
70Evanston12.1308
58Fontenelle Reservoir Dam7.6192
93Fossil Butte Monument11.7298
53Kemmerer9.4239
72Rock Springs7.6192
Southwest Wyoming – Annual averages for rainfall plus snowfall (Source currentresults)

What state is the driest state in the US?

The driest state in the US is Nevada. There are several reasons for this. First, the state is located in the Great Basin, which is a large area of land that is surrounded by mountains. This geographical feature means that there is very little rainfall in Nevada. Second, the state has a lot of desert land. Deserts are dry areas where there is very little rainfall. Finally, Nevada is a very sunny state. This means that there is less moisture in the air, which leads to less rainfall. These factors make it difficult for vegetation to grow and for water to be available, making it the driest state in the US.

What state has the driest city in the US?

Aerial View of Yuma, Arizona
Aerial View of Yuma, Arizona

The most dried city in the United States is Yuma, Arizona. Yuma has an arid climate, which means that it receives very little rainfall each year. The city averages only about 3 inches of rain per year, and it often experiences long periods of drought. The dry climate is due to the city’s location in the Sonoran Desert. The desert is a large area of land that receives very little rainfall. The dry climate of Yuma makes it the perfect place for growing crops that require little water, such as cotton and hay. However, the dry climate also makes the city vulnerable to wildfires.

Is Colorado drier than California?

Great Sand Dunes National Park and Preserve, Colorado
Great Sand Dunes National Park and Preserve, Colorado

According to climatologists, climate change will make Colorado considerably drier and warmer in the future. Temperature and rainfall changes will negatively influence agriculture and contribute to more frequent and lengthier droughts, putting additional demand on existing water supplies in this part of the country.

Colorado is drier than California for a few reasons. One reason is that Colorado is located in the interior of the country, while California is located on the coast. This means that Colorado is less influenced by moist air from the Pacific Ocean, and thus tends to be drier overall. Additionally, the Rocky Mountains act as a barrier, preventing moisture from moving east into Colorado from the wetter states to the west.

What are the driest areas in the US?

Sedona, Arizona - Driest States in the US
Sedona, Arizona

According to some climatologists, climate change will make the southwestern United States considerably drier and warmer in the future. Temperature and rainfall changes will negatively influence agriculture and contribute to more frequent and lengthier droughts, putting additional demand on existing water supplies in this part of the country.

The southwestern United States ranks among the country’s driest regions, and we expect climate change to dry it even further. Rising temperatures will drive the soil’s water to evaporate, and we anticipate less rainfall in this region going forward. These changes will put stress on agriculture and water supplies, and could lead to more frequent and severe droughts.

The western United States is also one of the driest areas in the country. The region experiences little rainfall and high temperatures, which can lead to droughts. These conditions negatively impact agriculture and put additional demand on water supplies.

YouTube video
Top 10 Driest States in the US (2022)

What states have the least humidity?

The states with the least humidity are Arizona, New Mexico, and Colorado. These states are all located in the southwestern United States, which is expected to see drier and warmer conditions in the future due to climate change.

Arizona has an average humidity of only 30%, making it the driest state in the country. New Mexico and Colorado are not far behind, with average humidity levels of 32% and 34%, respectively.

The low humidity in these states is due to their location in the desert. The dry, warm air in the desert does not hold much moisture, leading to very low humidity levels.

The low humidity levels in the southwestern United States are expected to worsen as climate change causes the region to become drier and warmer. This will put additional strain on water supplies in the area and make it even harder for agriculture to thrive.

Summary – Driest States in the US

According to some climatologists, climate change will make the area around the United States significantly drier and warmer in the future. Changes in temperature and precipitation will adversely affect agriculture. They will also contribute to more frequent and longer droughts, putting additional strain on existing water supplies in this part of the country. This will cause problems for agriculture and could lead to water shortages in the future.

StateInchesMilli­metresRank
Arizona13.63454
California22.256311
Colorado15.94057
Idaho18.94819
Montana15.33906
Nevada9.52411
New Mexico14.63705
North Dakota17.84528
Oregon27.469512
South Dakota20.151110
Texas28.973413
Utah12.23102
Wyoming12.93283
Average total yearly precipitation for each state (Source: currentresults)

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Marcel Kuhn