August weather in American Falls, ID
The average temperature in American Falls in August is 71.2°F (54.8°F–87.7°F). Average precipitation: 0.49 inches.
August is a summer month in American Falls, and is warmer than the annual average of 48.7°F. Daily temperatures swing about 32.9°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 13h 45m. For travel, August is a comfortable month to visit.
Avg High
87.7°F
Avg Low
54.8°F
Precipitation
0.49 in
Daylight
13h 45m
August records in American Falls
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (2020) | 52.0°F (2015) | 0.03 in (2011) |
| August 2 | 98.1°F (2017) | 52.0°F (2011) | 0.74 in (2021) |
| August 3 | 102.9°F (2020) | 53.1°F (2025) | 0.11 in (2021) |
| August 4 | 97.0°F (2024) | 48.0°F (2012) | 0.37 in (2023) |
| August 5 | 95.0°F (2010) | 46.9°F (2012) | 0.49 in (2014) |
| August 6 | 95.0°F (2012) | 50.0°F (2011) | 0.50 in (2014) |
| August 7 | 96.1°F (2013) | 48.9°F (2009) | 0.03 in (2015) |
| August 8 | 96.1°F (2012) | 48.0°F (2009) | 0.13 in (2017) |
| August 9 | 99.0°F (2018) | 50.0°F (2015) | 0.17 in (2017) |
| August 10 | 100.0°F (2018) | 48.0°F (2011) | 0.00 in (2008) |
| August 11 | 102.0°F (2018) | 52.0°F (2009) | 0.18 in (2022) |
| August 12 | 100.0°F (2018) | 48.9°F (2008) | 0.01 in (2010) |
| August 13 | 100.0°F (2021) | 46.9°F (2010) | 0.50 in (2024) |
| August 14 | 95.0°F (2011) | 46.9°F (2010) | 0.13 in (2014) |
| August 15 | 99.0°F (2013) | 45.0°F (2009) | 0.06 in (2014) |
| August 16 | 98.1°F (2013) | 45.0°F (2009) | 0.00 in (2008) |
| August 17 | 97.0°F (2013) | 41.0°F (2009) | 0.44 in (2023) |
| August 18 | 99.0°F (2020) | 45.0°F (2009) | 0.78 in (2021) |
| August 19 | 96.1°F (2025) | 48.0°F (2017) | 0.00 in (2008) |
| August 20 | 95.0°F (2013) | 45.0°F (2016) | 0.35 in (2023) |
| August 21 | 98.1°F (2009) | 46.9°F (2015) | 0.17 in (2014) |
| August 22 | 96.1°F (2011) | 44.1°F (2008) | 0.63 in (2014) |
| August 23 | 93.9°F (2011) | 42.1°F (2015) | 0.20 in (2014) |
| August 24 | 99.0°F (2011) | 39.0°F (2010) | 0.07 in (2014) |
| August 25 | 99.0°F (2011) | 42.1°F (2010) | 0.29 in (2023) |
| August 26 | 100.0°F (2010) | 46.0°F (2019) | 0.29 in (2025) |
| August 27 | 98.1°F (2010) | 44.1°F (2019) | 0.32 in (2025) |
| August 28 | 95.0°F (2011) | 37.9°F (2018) | 1.47 in (2013) |
| August 29 | 95.0°F (2015) | 41.0°F (2018) | 0.04 in (2015) |
| August 30 | 93.0°F (2023) | 44.1°F (2024) | 0.07 in (2010) |
| August 31 | 93.9°F (2022) | 45.0°F (2023) | 0.30 in (2008) |