Average Temperatures By State 2020

Because of the size of the United States and its varying degrees of latitudes and various geographic features, the country experiences a wide range of climates. Generally, overall temperatures are warmer as one travels further south and the air becomes drier as one moves further west until hitting the west coast.

The Southwest region of the U.S. has a hot desert climate at lower elevations. This region experiences high temperatures and dry air and has many vast desert areas. The Southeast region of the country experiences a somewhat sub-tropical climate that includes hot, humid summers (temperatures above 100 are not uncommon) and mild winters. The Northwest is characterized by a diverse climate with bitter, cold winters and somewhat humid, hot summers. The West Coast of the U.S. experiences cool, wet winters and dry, warm summers (with chilly evenings), specifically the further north one goes. The Midwest has humid summers, but winters are long and generally harsh, with temperatures below zero being common, especially in the northern states.

The average temperature in the contiguous United States in 2019 was 52.68 degrees Fahrenheit (°F). The Köppen climate classification is used in this article to describe state climates.

Coldest States in the U.S.

1. Alaska

Alaska is the coldest state in the U.S. with an average temperature of 26.6°F. Alaska has a subarctic climate. During the winter months, Alaska’s temperatures can drop as low as -.30°F. The Fairbanks area of Alaska experiences an extremely wide range of temperatures throughout the year ranging from -50°F in the winter to highs of 90°F in the summer.

2. North Dakota

North Dakota is the U.S.’s second-coldest state. The eastern half of North Dakota experiences a humid continental climate and the western half experiences a semi-arid climate. The average temperature in North Dakota is 40.4°F, with average temperatures around 24°F in the winter. January is North Dakota’s coldest month when temperatures range from 2°F in the northern parts of the state to 17°F in the southern parts.

3. Maine

The third-coldest state in the United States is Maine, where the average temperature is 41°F. Maine’s climate classification is humid continental, as is the majority of New England states. In the winter, the average temperature is 12°F. Maine has abundant snowfall in the winter with an average accumulated snowfall of 10 to 80 inches. The most northeastern city in the United State, Caribou, receives even more snowfall and harsher winter temperatures.

4. Minnesota

Minnesota is the fourth-coldest state in the country. Minnesota’s humid continental climate is greatly influenced by its proximity to Canada to its north and Lake Superior to its northeast. The average temperature in Minnesota is 41.2°F, with temperatures dropping as low at -30°F in the northern parts of the state in the month of January.

5. Wyoming

Wyoming is the fifth-coldest state in the United States with an average temperature of 42°F. Wyoming has a mostly semi-arid climate. During the winter, the average minimum temperatures range from 0°F to 15°F. Winds are typically in the 30 to 40 mile per hour range, with gusts up to 50 to 60 miles per hour, significantly reducing the temperature. Additionally, Wyoming’s highlands and mountaintops can receive up to 200 inches of snow per year and lowlands can receive up to 50 inches of snow.

Hottest States in the U.S.

1. Florida

Florida is the hottest state in the U.S. with an average annual temperature of 70.7°F. As the southernmost contiguous state in the U.S., Florida has a sub-tropical climate in its northern and central parts and a tropical climate in its southern parts. Florida has mild winters and extremely hot summers, especially during its hottest month of July, where temperatures reach average highs of 90°F to 92°F and it is not uncommon for temperatures to hit or go above 100°F.

2. Hawaii

Hawaii is the second-hottest state in the United States with an average annual temperature of 70.0°F. Hawaii experiences four different Köppen climate zones: tropical, arid, temperate, and polar. In the summer, temperatures in Hawaii peak around 84°F and typically do not rise above 90°F. In the winter, high temperatures are usually around 79°F and lows rarely drop below 65°F. Hawaii has never recorded a temperature below freezing (32°F).

3. Louisiana

With an average annual temperature of 66.4°F, Louisiana is the third-hottest state in the United States. Louisiana has a subtropical climate with long, hot, and humid summers and short, mild winters. August is Louisiana’s hottest month, where average highs range from 89°F to 94°F. Louisiana’s position on the Gulf of Mexico gives it a considerable wet season and high humidity that can make the heat feel like 120°F.

4. Texas

Texas is the fourth-hottest state in the United States with an average annual temperature of 65.3°F. Texas has arid and semi-arid climates in its west and humid and sub-tropical climates in its east. August is Texas’s hottest month, where average high temperatures are in the 93°F to 101°F range. In January, Texas’s coldest month, temperatures the average high temperatures are between 52°F and 71°F.

5. Georgia

Located just north of Florida, Georgia is the fifth-hottest state in the United State with an average annual temperature of 63.5°F. In its northeast, Georgia has an oceanic climate and a humid subtropical climate in the rest of the state. Summers in Georgia have average highs ranging from 72°F to 82°F in the northeast region and 90°F to 100°F in the south.

Average Temperatures By State 2020

* Numbers are in degrees Fahrenheit (°F)
State Average Temperatures by State 2020 Pop.
Florida22.321,992,985
Alaska26.6734,002
North Dakota40.4761,723
Maine411,345,790
Minnesota41.25,700,671
Wyoming42567,025
Montana42.71,086,759
Vermont42.9628,061
Wisconsin43.15,851,754
New Hampshire43.81,371,246
Idaho44.41,826,156
Michigan44.410,045,029
Colorado45.15,845,526
South Dakota45.2903,027
New York45.419,440,469
Iowa47.83,179,849
Massachusetts47.96,976,597
Washington48.37,797,095
Oregon48.44,301,089
Utah48.63,282,115
Nebraska48.81,952,570
Pennsylvania48.812,820,878
Connecticut493,563,077
Nevada49.93,139,658
Rhode Island50.11,056,161
Ohio50.711,747,694
Indiana51.76,745,354
Illinois51.812,659,682
West Virginia51.81,778,070
New Jersey52.78,936,574
New Mexico53.42,096,640
Maryland54.26,083,116
Kansas54.32,910,357
Missouri54.66,169,270
Virginia55.18,626,207
Delaware55.3982,895
Kentucky55.64,499,692
Tennessee57.66,897,576
North Carolina5910,611,862
California59.439,937,489
Oklahoma59.63,954,821
Arizona60.37,378,494
Arkansas60.43,038,999
South Carolina62.45,210,095
Alabama62.84,908,621
Mississippi63.42,989,260
Georgia63.510,736,059
Texas64.829,472,295
Louisiana66.44,645,184
Hawaii701,412,687