September weather in Gunnison, UT
The average temperature in Gunnison in September is 60.0°F (40.6°F–79.3°F). Average precipitation: 1.14 inches.
September is a fall month in Gunnison, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 38.7°F between overnight low and afternoon high. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
79.3°F
Avg Low
40.6°F
Precipitation
1.14 in
Daylight
12h 14m
September records in Gunnison
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (2022) | 37.9°F (2020) | 0.21 in (2021) |
| September 2 | 93.9°F (2022) | 37.0°F (2020) | 0.26 in (2023) |
| September 3 | 93.9°F (2022) | 37.9°F (2020) | 0.05 in (2016) |
| September 4 | 97.0°F (2022) | 37.9°F (2020) | 0.42 in (2023) |
| September 5 | 96.1°F (2022) | 37.0°F (2024) | 0.00 in (2016) |
| September 6 | 96.1°F (2020) | 35.1°F (2016) | 0.05 in (2019) |
| September 7 | 98.1°F (2022) | 35.1°F (2016) | 0.00 in (2016) |
| September 8 | 99.0°F (2022) | 35.1°F (2016) | 0.00 in (2016) |
| September 9 | 93.9°F (2022) | 33.1°F (2020) | 0.21 in (2020) |
| September 10 | 93.0°F (2021) | 30.0°F (2016) | 0.11 in (2017) |
| September 11 | 91.0°F (2018) | 30.9°F (2020) | 0.50 in (2019) |
| September 12 | 88.0°F (2018) | 33.1°F (2019) | 0.35 in (2021) |
| September 13 | 87.1°F (2017) | 30.9°F (2024) | 0.38 in (2023) |
| September 14 | 86.0°F (2020) | 26.1°F (2024) | 0.18 in (2023) |
| September 15 | 87.1°F (2018) | 33.1°F (2016) | 0.54 in (2017) |
| September 16 | 88.0°F (2018) | 32.0°F (2016) | 0.33 in (2017) |
| September 17 | 87.1°F (2018) | 33.1°F (2025) | 0.00 in (2016) |
| September 18 | 88.0°F (2020) | 30.0°F (2019) | 0.06 in (2024) |
| September 19 | 87.1°F (2018) | 33.1°F (2019) | 0.14 in (2021) |
| September 20 | 88.0°F (2016) | 32.0°F (2021) | 0.01 in (2025) |
| September 21 | 82.9°F (2016) | 28.9°F (2018) | 0.08 in (2025) |
| September 22 | 84.9°F (2020) | 28.0°F (2019) | 0.63 in (2016) |
| September 23 | 82.9°F (2018) | 28.0°F (2023) | 0.48 in (2016) |
| September 24 | 84.9°F (2020) | 28.9°F (2023) | 0.65 in (2017) |
| September 25 | 88.0°F (2020) | 27.0°F (2017) | 0.20 in (2016) |
| September 26 | 86.0°F (2020) | 28.0°F (2017) | 0.00 in (2016) |
| September 27 | 86.0°F (2024) | 27.0°F (2018) | 0.00 in (2016) |
| September 28 | 88.0°F (2024) | 30.0°F (2020) | 0.12 in (2017) |
| September 29 | 90.0°F (2024) | 28.9°F (2020) | 0.18 in (2021) |
| September 30 | 86.0°F (2024) | 26.1°F (2019) | 0.05 in (2022) |