Summer Temperature by County
Average temperature in June, July and August, 1991 to 2020.
See Summer Temperature on the interactive map →
Highest counties
| County | Summer Temperature |
|---|---|
| Imperial County, California | 91.3°F |
| La Paz County, Arizona | 90.6°F |
| Yuma County, Arizona | 90.4°F |
| Maricopa County, Arizona | 89.1°F |
| Zapata County, Texas | 87.1°F |
| Pinal County, Arizona | 86.9°F |
| Starr County, Texas | 86.8°F |
| Hidalgo County, Texas | 86.5°F |
| Webb County, Texas | 86.2°F |
| Jim Hogg County, Texas | 86.0°F |
| Dimmit County, Texas | 86.0°F |
| Brooks County, Texas | 86.0°F |
Lowest counties
| County | Summer Temperature |
|---|---|
| Copper River Census Area, Alaska | 47.1°F |
| North Slope Borough, Alaska | 47.2°F |
| Skagway Municipality, Alaska | 47.3°F |
| Yakutat City and Borough, Alaska | 47.7°F |
| Aleutians West Census Area, Alaska | 47.8°F |
| Juneau City and Borough, Alaska | 48.2°F |
| Chugach Census Area, Alaska | 49.0°F |
| Petersburg Borough, Alaska | 49.8°F |
| Haines Borough, Alaska | 49.9°F |
| Matanuska-Susitna Borough, Alaska | 49.9°F |
| Anchorage Municipality, Alaska | 50.0°F |
| Nome Census Area, Alaska | 50.1°F |