Average Low-Temperature Map of the US In December range from a high of 67.4 degrees Fahrenheit (19.7 degrees Celsius) in Hawaii to a low of 2.6 °F (-16.3 °C) in Alaska. For the entire United States, excluding Hawaii and Alaska, the season averages just above freezing at 33.2 °F (0.7 °C). December temperature map USA.
It is based on data collected by weather stations throughout each state during the years 1971 to 2000 and made available by the NOAA National Climatic Data Center of the United States.
| State | Avg ° F | Avg ° C | Rank |
|---|---|---|---|
| Alabama | 46.5 | 8.1 | 7 |
| Alaska | 2.6 | -16.3 | 50 |
| Arizona | 43.6 | 6.4 | 10 |
| Arkansas | 41.5 | 5.3 | 12 |
| California | 46.2 | 7.9 | 8 |
| Colorado | 25.8 | -3.4 | 35 |
| Connecticut | 28.5 | -1.9 | 30 |
| Delaware | 36.1 | 2.3 | 16 |
| Florida | 59.4 | 15.2 | 2 |
| Georgia | 47.8 | 8.8 | 5 |
| Hawaii | 67.4 | 19.7 | 1 |
| Idaho | 25.4 | -3.7 | 37 |
| Illinois | 28.3 | -2.1 | 32 |
| Indiana | 29.4 | -1.4 | 29 |
| Iowa | 21.7 | -5.7 | 39 |
| Kansas | 31.9 | -0.1 | 26 |
| Kentucky | 35.9 | 2.2 | 18 |
| Louisiana | 50.9 | 10.5 | 3 |
| Maine | 16.8 | -8.4 | 47 |
| Maryland | 34.7 | 1.5 | 19 |
| Massachusetts | 27.4 | -2.6 | 34 |
| Michigan | 21.7 | -5.7 | 39 |
| Minnesota | 12.4 | -10.9 | 48 |
| Mississippi | 46.7 | 8.2 | 6 |
| Missouri | 32.3 | 0.2 | 24 |
| State | Avg ° F | Avg ° C | Rank |
|---|---|---|---|
| Montana | 21.2 | -6.0 | 41 |
| Nebraska | 25.7 | -3.5 | 36 |
| Nevada | 32.2 | 0.1 | 25 |
| New Hampshire | 21.1 | -6.1 | 43 |
| New Jersey | 33.0 | 0.6 | 21 |
| New Mexico | 36.1 | 2.3 | 16 |
| New York | 23.3 | -4.8 | 38 |
| North Carolina | 42.1 | 5.6 | 11 |
| North Dakota | 12.2 | -11.0 | 49 |
| Ohio | 29.5 | -1.4 | 28 |
| Oklahoma | 39.1 | 3.9 | 13 |
| Oregon | 34.0 | 1.1 | 20 |
| Pennsylvania | 28.4 | -2.0 | 31 |
| Rhode Island | 31.4 | -0.3 | 27 |
| South Carolina | 46.1 | 7.8 | 9 |
| South Dakota | 19.5 | -6.9 | 44 |
| Tennessee | 39.1 | 3.9 | 13 |
| Texas | 47.9 | 8.8 | 4 |
| Utah | 28.2 | -2.1 | 33 |
| Vermont | 19.4 | -7.0 | 45 |
| Virginia | 36.8 | 2.7 | 15 |
| Washington | 33.0 | 0.6 | 21 |
| West Virginia | 32.8 | 0.4 | 23 |
| Wisconsin | 17.2 | -8.2 | 46 |
| Wyoming | 21.2 | -6.0 | 41 |
✅US Winter Temperature Map
Most prominently, the portion of the United States west of the continental divide (the West) typically reaches its climatological coldest day in December, whereas most of the East reaches its seasonal minimum in January.