United States Climate
Climate Zone and Historical Climate Data
United States Climatic Classifications
| Code | Description | Group | Number of states/regions | States/regions |
|---|---|---|---|---|
| Cfa | Humid subtropical, no dry season | Temperate | 21 | Alabama Arkansas Delaware Florida Georgia Kansas Kentucky Louisiana Maryland Mississippi Missouri New Jersey New York North Carolina Oklahoma Rhode Island South Carolina Tennessee Texas Virginia |
| Dfb | Humid continental, no dry season, warm summer | Cold (continental) | 10 | Connecticut Maine Michigan Minnesota New Hampshire North Dakota Pennsylvania Utah Vermont Wisconsin |
| Dfa | Humid continental, no dry season, hot summer | Cold (continental) | 7 | Illinois Indiana Iowa Massachusetts Nebraska Ohio South Dakota |
| Bsk | Mid-latitude steppe | Arid | 4 | Montana Nevada New Mexico Wyoming |
| Cfb | Marine west coast, warm summer | Temperate | 2 | Hawaii West Virginia |
| Csa | Mediterranean, hot summer | Temperate | 2 | Arizona California |
| Csb | Mediterranean, warm summer | Temperate | 2 | Oregon |
| Dfc | Subartic, severe winter, no dry season, cool summer | Cold (continental) | 2 | Alaska Colorado |
| Dsb | Humid continental, dry warm summer | Cold (continental) | 1 | Washington |
| Dsc | Subartic, subalpine | Cold (continental) | 1 | Idaho |
Summary: Most regions (21) in United States lie in the Humid subtropical, no dry season climate zone (Köppen: Cfa). The mean average of annual temperatures range from a high of 24.12°C (75.42°F) in Florida to a low of -1.95°C (28.49°F) in Alaska.
Climate United States: Weather By Month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Nov | Oct | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °C (°F) | 20.82(69.48) | 23.37(74.07) | 25.03(77.05) | 28.43(83.17) | 30.34(86.61) | 33.98(93.16) | 36.89(98.4) | 36.48(97.66) | 33.37(92.07) | 28.54(83.37) | 25.01(77.02) | 22.89(73.2) | 36.89(98.4) |
| Average high °C (°F) | 3.08(37.54) | 4.85(40.73) | 9.92(49.86) | 15.38(59.68) | 20.94(69.69) | 25.94(78.69) | 28.65(83.57) | 27.79(82.02) | 24.23(75.61) | 17.44(63.39) | 10.25(50.45) | 5.13(41.23) | 16.13(61.03) |
| Daily mean °C (°F) | 0.01(32.02) | 1.64(34.95) | 6.53(43.75) | 11.83(53.29) | 17.45(63.41) | 22.36(72.25) | 24.96(76.93) | 23.92(75.06) | 20.26(68.47) | 13.69(56.64) | 6.82(44.28) | 2.24(36.03) | 12.64(54.75) |
| Average low °C (°F) | -4.43(24.03) | -3.25(26.15) | 1.18(34.12) | 5.59(42.06) | 10.64(51.15) | 15.05(59.09) | 17.66(63.79) | 16.91(62.44) | 13.81(56.86) | 8.18(46.72) | 2.13(35.83) | -1.73(28.89) | 6.81(44.26) |
| Record low °C (°F) | -21.54(-6.77) | -18.22(-0.8) | -17.07(1.27) | -8.49(16.72) | -2.93(26.73) | 1.74(35.13) | 6.15(43.07) | 5.55(41.99) | 1.16(34.09) | -6.08(21.06) | -16.09(3.04) | -19.64(-3.35) | -21.54(-6.77) |
| Average precipitation mm (inches) | 41.28(1.63) | 46.44(1.83) | 48.44(1.91) | 57.09(2.25) | 62.39(2.46) | 57.44(2.26) | 59.56(2.34) | 59.04(2.32) | 44.93(1.77) | 46.6(1.83) | 35.15(1.38) | 45.11(1.78) | 50.29(1.98) |
| Average precipitation days (≥ 1.0 mm) | 6.46 | 7.22 | 8.38 | 9.05 | 10.48 | 9.86 | 10.8 | 10.08 | 7.6 | 6.73 | 5.7 | 6.78 | 8.26 |
| Average relative humidity (%) | 77.76 | 77.93 | 74.11 | 70.12 | 69.9 | 67.82 | 67.25 | 67.13 | 67.68 | 68.46 | 71.05 | 77.01 | 71.35 |
| Mean monthly sunshine hours | 6.76 | 7.44 | 9.49 | 11.8 | 13.01 | 13.68 | 13.7 | 12.97 | 11.19 | 8.31 | 7.28 | 6.66 | 10.19 |
United States Climate Graph
United States’s Cities by Temperature
United States’s states/regions ranking by average yearly temperature:
| Florida |
|
24.12°C | 75.42°F |
| Louisiana |
|
20.68°C | 69.22°F |
| Texas |
|
20.34°C | 68.61°F |
| Georgia |
|
20.27°C | 68.49°F |
| California |
|
19.97°C | 67.95°F |
| Alabama |
|
19.96°C | 67.93°F |
| Mississippi |
|
19.57°C | 67.23°F |
| South Carolina |
|
19.1°C | 66.38°F |
| Oklahoma |
|
17.62°C | 63.72°F |
| Arkansas |
|
17.24°C | 63.03°F |
| North Carolina |
|
17.23°C | 63.01°F |
| Tennessee |
|
16.38°C | 61.48°F |
| Hawaii |
|
16.06°C | 60.91°F |
| Arizona |
|
15.75°C | 60.35°F |
| Virginia |
|
15.65°C | 60.17°F |
| United States Naval Base Guantanamo Bay |
|
15.38°C | 59.68°F |
| District of Columbia |
|
15.14°C | 59.25°F |
| Kansas |
|
14.95°C | 58.91°F |
| Maryland |
|
14.69°C | 58.44°F |
| Missouri |
|
14.59°C | 58.26°F |
| Delaware |
|
14.55°C | 58.19°F |
| Kentucky |
|
14.34°C | 57.81°F |
| New Jersey |
|
13.62°C | 56.52°F |
| New York |
|
13.27°C | 55.89°F |
| New Mexico |
|
13.14°C | 55.65°F |
| West Virginia |
|
12.75°C | 54.95°F |
| Illinois |
|
12.07°C | 53.73°F |
| Indiana |
|
12.01°C | 53.62°F |
| Rhode Island |
|
11.92°C | 53.46°F |
| Connecticut |
|
11.47°C | 52.65°F |
| Massachusetts |
|
11.45°C | 52.61°F |
| Nebraska |
|
11.42°C | 52.56°F |
| Ohio |
|
11.32°C | 52.38°F |
| Iowa |
|
10.63°C | 51.13°F |
| Pennsylvania |
|
10.55°C | 50.99°F |
| South Dakota |
|
10.25°C | 50.45°F |
| Nevada |
|
10.15°C | 50.27°F |
| Oregon |
|
10.09°C | 50.16°F |
| Utah |
|
9.7°C | 49.46°F |
| New Hampshire |
|
9.66°C | 49.39°F |
| Wyoming |
|
8.67°C | 47.61°F |
| Wisconsin |
|
8.32°C | 46.98°F |
| Michigan |
|
8.11°C | 46.6°F |
| Washington |
|
7.46°C | 45.43°F |
| Vermont |
|
7.21°C | 44.98°F |
| Maine |
|
7.0°C | 44.6°F |
| North Dakota |
|
6.91°C | 44.44°F |
| Minnesota |
|
6.19°C | 43.14°F |
| Montana |
|
4.29°C | 39.72°F |
| Colorado |
|
3.46°C | 38.23°F |
| Idaho |
|
2.72°C | 36.9°F |
| Alaska |
|
-1.95°C | 28.49°F |
States/Regions
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Popular places in United States
- Brigham City Utah
- Ruidoso New Mexico
- Carol Stream Illinois
- Fairfield Ohio
- Moline Illinois
- Chillicothe Missouri
- South Gate California
- Berkeley California
- Timberlane Louisiana
- Aberdeen Maryland
- Carter Springs Nevada
- Winter Haven Florida
- Byram Mississippi
- Kings Park West Virginia
- Harrisburg Pennsylvania
- Lynnwood Washington
- Edgewood Indiana
- Buckman Oregon
- Deering Alaska
- Dentsville South Carolina
- McPherson Kansas
- Concord New Hampshire
- Berwyn Nebraska
- Wolfeboro New Hampshire
- Marinette Wisconsin
- De Soto Missouri
- Town 'n' Country Florida
- Price Utah
- Jefferson City Tennessee
- St. John Indiana
- Arcadia Oklahoma
- Belfast Maine
- Milford Connecticut
- Ashcreek Oregon
- Nashua New Hampshire
- Suffolk Virginia
- Stratford Connecticut
- Wilton New Hampshire
- Providence Kentucky
- Albia Iowa
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