August weather in West Yellowstone, MT
The average temperature in West Yellowstone in August is °F (°F–°F). Average precipitation: 1.09 inches.
August is a summer month in West Yellowstone, and is cooler than the annual average of 0°F. Expect about 5 days with precipitation. Daylight averages about 13h 52m.
Avg High
°F
Avg Low
°F
Precipitation
1.09 in
Daylight
13h 52m
August records in West Yellowstone
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 92.8°F (2000) | 25.9°F (2001) | 0.20 in (2006) |
| August 2 | 92.5°F (2020) | 32.4°F (2016) | 2.00 in (2022) |
| August 3 | 91.2°F (2001) | 27.9°F (2006) | 0.60 in (2023) |
| August 4 | 89.2°F (2019) | 27.3°F (2012) | 0.60 in (2023) |
| August 5 | 90.3°F (2012) | 29.5°F (2016) | 0.50 in (2014) |
| August 6 | 91.8°F (2001) | 27.5°F (2018) | 0.70 in (2021) |
| August 7 | 91.6°F (2001) | 30.2°F (2017) | 0.30 in (2011) |
| August 8 | 92.1°F (2012) | 28.4°F (2004) | 0.40 in (2015) |
| August 9 | 92.7°F (2018) | 27.0°F (2002) | 0.30 in (2010) |
| August 10 | 95.5°F (2018) | 27.7°F (2002) | 0.30 in (2005) |
| August 11 | 97.0°F (2018) | 30.2°F (2025) | 0.10 in (2000) |
| August 12 | 91.9°F (2003) | 22.5°F (2004) | 0.60 in (2022) |
| August 13 | 90.9°F (2003) | 27.3°F (2002) | 0.60 in (2022) |
| August 14 | 97.2°F (2003) | 26.2°F (2005) | 0.90 in (2017) |
| August 15 | 92.8°F (2003) | 28.6°F (2004) | 0.10 in (1999) |
| August 16 | 92.1°F (2013) | 25.3°F (2009) | 0.00 in (1999) |
| August 17 | 93.9°F (2020) | 25.2°F (2002) | 0.30 in (2007) |
| August 18 | 90.1°F (2020) | 26.6°F (2015) | 0.70 in (2021) |
| August 19 | 89.2°F (2013) | 25.2°F (2002) | 0.60 in (2020) |
| August 20 | 88.7°F (2013) | 24.8°F (2016) | 1.20 in (2023) |
| August 21 | 91.2°F (2009) | 27.7°F (2000) | 0.40 in (2023) |
| August 22 | 90.7°F (2009) | 27.3°F (2015) | 0.30 in (2004) |
| August 23 | 87.3°F (2006) | 23.5°F (2015) | 0.60 in (2009) |
| August 24 | 90.0°F (2008) | 26.8°F (2010) | 0.10 in (2005) |
| August 25 | 91.2°F (2015) | 24.8°F (2012) | 0.40 in (2004) |
| August 26 | 90.1°F (2011) | 25.3°F (2005) | 0.30 in (2004) |
| August 27 | 89.1°F (2011) | 25.2°F (2019) | 0.80 in (2025) |
| August 28 | 89.2°F (2012) | 27.0°F (2008) | 0.70 in (2025) |
| August 29 | 88.3°F (2017) | 24.6°F (2024) | 0.10 in (2015) |
| August 30 | 90.7°F (2016) | 25.9°F (2024) | 1.60 in (2014) |
| August 31 | 89.4°F (2022) | 21.7°F (2005) | 0.30 in (2009) |