September weather in Powell, WY
The average temperature in Powell in September is 56.9°F (40.8°F–73.0°F). Average precipitation: 0.76 inches.
September is a fall month in Powell, and is warmer than the annual average of 43.2°F. Daily temperatures swing about 32.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
73.0°F
Avg Low
40.8°F
Precipitation
0.76 in
Daylight
12h 18m
September records in Powell
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (2024) | 36.0°F (2020) | 0.50 in (2008) |
| September 2 | 97.0°F (2024) | 35.1°F (2006) | 0.97 in (1986) |
| September 3 | 98.1°F (2025) | 36.0°F (2006) | 0.12 in (1999) |
| September 4 | 97.0°F (2024) | 35.1°F (2011) | 0.12 in (1999) |
| September 5 | 97.0°F (2024) | 35.1°F (2014) | 0.21 in (1987) |
| September 6 | 98.1°F (2022) | 36.0°F (1983) | 0.24 in (2001) |
| September 7 | 98.1°F (2022) | 32.0°F (1992) | 0.36 in (2001) |
| September 8 | 98.1°F (2022) | 9.0°F (1984) | 0.26 in (2002) |
| September 9 | 98.1°F (2022) | 24.1°F (2020) | 0.36 in (2019) |
| September 10 | 93.0°F (2024) | 28.0°F (2020) | 0.25 in (1991) |
| September 11 | 93.9°F (2024) | 28.0°F (1989) | 0.41 in (1991) |
| September 12 | 89.1°F (1993) | 21.9°F (2014) | 0.89 in (2019) |
| September 13 | 91.9°F (1990) | 28.0°F (2014) | 0.32 in (2016) |
| September 14 | 89.1°F (2015) | 25.0°F (1982) | 0.44 in (1982) |
| September 15 | 88.0°F (2020) | 28.9°F (2023) | 0.82 in (2017) |
| September 16 | 91.9°F (2000) | 32.0°F (1982) | 0.56 in (2006) |
| September 17 | 91.0°F (2000) | 30.9°F (2021) | 0.55 in (1996) |
| September 18 | 87.1°F (1984) | 25.0°F (2003) | 0.48 in (2019) |
| September 19 | 88.0°F (1981) | 28.0°F (1983) | 0.26 in (1985) |
| September 20 | 88.0°F (2009) | 19.9°F (1983) | 0.42 in (1995) |
| September 21 | 89.1°F (2024) | 21.9°F (1983) | 0.10 in (1998) |
| September 22 | 87.1°F (2025) | 25.0°F (1983) | 0.27 in (1985) |
| September 23 | 84.0°F (2024) | 24.1°F (2000) | 0.39 in (1984) |
| September 24 | 89.1°F (1987) | 21.0°F (1984) | 0.31 in (2005) |
| September 25 | 90.0°F (2024) | 16.0°F (1984) | 0.73 in (2017) |
| September 26 | 99.0°F (2024) | 19.0°F (1984) | 0.82 in (2016) |
| September 27 | 98.1°F (2024) | 21.0°F (2023) | 0.19 in (1982) |
| September 28 | 93.0°F (2024) | 18.0°F (1984) | 0.18 in (1983) |
| September 29 | 95.0°F (2024) | 19.9°F (1984) | 0.36 in (1983) |
| September 30 | 102.0°F (2024) | 16.0°F (1985) | 0.49 in (1995) |