American Falls, ID
Climate overview — based on NOAA 1991-2020 normals from AMERICAN FALLS, ID US.
Year-round temperatures (°F)
Climate summary
American Falls has an annual average temperature of 48.7°F with about 11.1 inches of precipitation per year. The warmest month is July (average high 90.4°F), and the coldest is January (average low 18.7°F). May is typically the wettest month (1.54 in) and August the driest (0.49 in).
Best time to visit American Falls
Full guide →Climate change signal
All-time records →218 of 366 (59.6%) of American Falls's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 2000s | 16 | |
| 2010s | 244 | |
| 2020s | 106 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 34.5°F | 18.7°F | 26.6°F | 0.96 in | — | 8 |
| February | 39.1°F | 21.0°F | 30.0°F | 0.68 in | — | 7 |
| March | 51.8°F | 29.1°F | 40.5°F | 1.02 in | — | 9 |
| April | 60.0°F | 35.0°F | 47.5°F | 1.30 in | — | 9 |
| May | 71.3°F | 42.5°F | 56.9°F | 1.54 in | — | 8 |
| June | 79.1°F | 49.6°F | 64.4°F | 1.15 in | — | 5 |
| July | 90.4°F | 56.4°F | 73.4°F | 0.53 in | — | 3 |
| August | 87.7°F | 54.8°F | 71.2°F | 0.49 in | — | 3 |
| September | 76.9°F | 46.2°F | 61.5°F | 0.81 in | — | 5 |
| October | 61.4°F | 36.2°F | 48.8°F | 0.92 in | — | 6 |
| November | 46.5°F | 26.8°F | 36.6°F | 0.83 in | — | 6 |
| December | 34.5°F | 20.0°F | 27.2°F | 0.87 in | — | 9 |
Climate twins of American Falls
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).