Average Daily High by County
Average daily maximum temperature across the year, 1991 to 2020.
See Average Daily High on the interactive map →
Highest counties
| County | Average Daily High |
|---|---|
| Imperial County, California | 88.0°F |
| Yuma County, Arizona | 87.4°F |
| Starr County, Texas | 86.2°F |
| Zapata County, Texas | 86.0°F |
| Hidalgo County, Texas | 85.9°F |
| La Paz County, Arizona | 85.9°F |
| Collier County, Florida | 85.8°F |
| Hendry County, Florida | 85.3°F |
| Brooks County, Texas | 85.3°F |
| Maricopa County, Arizona | 85.3°F |
| Miami-Dade County, Florida | 85.2°F |
| Broward County, Florida | 85.2°F |
Lowest counties
| County | Average Daily High |
|---|---|
| North Slope Borough, Alaska | 23.1°F |
| Northwest Arctic Borough, Alaska | 30.6°F |
| Nome Census Area, Alaska | 32.3°F |
| Copper River Census Area, Alaska | 34.1°F |
| Southeast Fairbanks Census Area, Alaska | 34.4°F |
| Yukon-Koyukuk Census Area, Alaska | 34.6°F |
| Denali Borough, Alaska | 35.8°F |
| Skagway Municipality, Alaska | 36.6°F |
| Kusilvak Census Area, Alaska | 36.7°F |
| Matanuska-Susitna Borough, Alaska | 37.3°F |
| Fairbanks North Star Borough, Alaska | 37.6°F |
| Bethel Census Area, Alaska | 38.7°F |