September weather in Big Piney, WY
The average temperature in Big Piney in September is 50.8°F (31.8°F–69.7°F). Average precipitation: 0.64 inches.
September is a fall month in Big Piney, and is warmer than the annual average of 36.5°F. Daily temperatures swing about 37.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 16m. For travel, September is cool.
Avg High
69.7°F
Avg Low
31.8°F
Precipitation
0.64 in
Daylight
12h 16m
September records in Big Piney
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 89.1°F (2019) | 23.2°F (2006) | 0.16 in (2008) |
| September 2 | 89.1°F (2019) | 29.1°F (2008) | 0.17 in (2004) |
| September 3 | 89.1°F (2017) | 27.1°F (2010) | 0.51 in (2023) |
| September 4 | 91.0°F (2022) | 27.1°F (2008) | 0.44 in (2007) |
| September 5 | 91.0°F (2020) | 28.2°F (2011) | 0.28 in (2007) |
| September 6 | 91.0°F (2022) | 23.2°F (2015) | 0.03 in (2011) |
| September 7 | 91.0°F (2022) | 20.1°F (2010) | 0.21 in (2002) |
| September 8 | 82.9°F (2021) | 24.1°F (1999) | 0.31 in (2002) |
| September 9 | 88.0°F (2021) | 17.2°F (2020) | 0.27 in (2005) |
| September 10 | 82.0°F (2018) | 15.3°F (2020) | 0.28 in (2008) |
| September 11 | 82.0°F (2018) | 19.2°F (2010) | 0.19 in (2008) |
| September 12 | 84.9°F (2015) | 24.3°F (2010) | 0.49 in (2004) |
| September 13 | 82.9°F (2015) | 21.0°F (2005) | 0.16 in (2016) |
| September 14 | 82.0°F (2020) | 21.0°F (2003) | 0.65 in (2016) |
| September 15 | 84.9°F (2000) | 23.0°F (2003) | 0.63 in (2006) |
| September 16 | 84.0°F (2000) | 27.0°F (2005) | 0.35 in (2022) |
| September 17 | 81.0°F (2010) | 26.1°F (2003) | 0.23 in (2001) |
| September 18 | 80.1°F (2020) | 16.0°F (2003) | 0.10 in (2017) |
| September 19 | 82.9°F (2010) | 19.9°F (2003) | 0.21 in (2017) |
| September 20 | 80.1°F (2016) | 24.1°F (2005) | 0.46 in (1999) |
| September 21 | 78.1°F (2015) | 19.2°F (2018) | 0.43 in (2022) |
| September 22 | 81.0°F (2015) | 19.0°F (2002) | 0.35 in (2016) |
| September 23 | 81.0°F (2015) | 21.9°F (2000) | 0.26 in (2000) |
| September 24 | 80.1°F (2015) | 21.0°F (2000) | 0.44 in (2017) |
| September 25 | 82.0°F (2015) | 17.2°F (2018) | 0.08 in (2017) |
| September 26 | 82.0°F (2010) | 19.0°F (2005) | 0.07 in (2012) |
| September 27 | 82.9°F (2010) | 19.0°F (1999) | 0.01 in (2013) |
| September 28 | 84.0°F (2010) | 15.3°F (2020) | 0.30 in (2019) |
| September 29 | 82.9°F (2024) | 15.1°F (1999) | 0.19 in (2022) |
| September 30 | 79.0°F (2011) | 21.9°F (1999) | 0.13 in (2022) |