September weather in Fairmont, OK
The average temperature in Fairmont in September is 72.7°F (60.3°F–85.1°F). Average precipitation: inches.
September is a fall month in Fairmont, and is warmer than the annual average of 59.1°F. Daily temperatures swing about 24.8°F between overnight low and afternoon high. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
85.1°F
Avg Low
60.3°F
Precipitation
in
Daylight
12h 13m
September records in Fairmont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (2011) | 55.0°F (2017) | 0.43 in (2025) |
| September 2 | 106.0°F (2012) | 59.0°F (2025) | 0.57 in (2017) |
| September 3 | 108.0°F (2012) | 54.0°F (2010) | 0.49 in (2018) |
| September 4 | 104.0°F (2012) | 50.0°F (2010) | 1.52 in (2018) |
| September 5 | 102.0°F (2012) | 50.0°F (2011) | 0.95 in (2018) |
| September 6 | 100.9°F (2015) | 46.0°F (2011) | 0.48 in (2014) |
| September 7 | 102.9°F (2015) | 51.1°F (2011) | 0.29 in (2009) |
| September 8 | 99.0°F (2013) | 50.0°F (2011) | 0.76 in (2010) |
| September 9 | 97.0°F (2016) | 48.0°F (2020) | 1.59 in (2016) |
| September 10 | 98.1°F (2021) | 48.9°F (2012) | 0.26 in (2022) |
| September 11 | 99.0°F (2021) | 52.0°F (2022) | 1.35 in (2023) |
| September 12 | 100.0°F (2011) | 46.9°F (2022) | 3.96 in (2019) |
| September 13 | 99.0°F (2011) | 44.1°F (2014) | 0.68 in (2012) |
| September 14 | 96.1°F (2017) | 53.1°F (2014) | 0.22 in (2012) |
| September 15 | 93.9°F (2019) | 53.1°F (2011) | 0.10 in (2009) |
| September 16 | 95.0°F (2021) | 53.1°F (2011) | 0.68 in (2013) |
| September 17 | 98.1°F (2022) | 53.1°F (2023) | 0.51 in (2011) |
| September 18 | 99.0°F (2022) | 48.9°F (2012) | 0.11 in (2015) |
| September 19 | 102.9°F (2024) | 52.0°F (2020) | 0.26 in (2017) |
| September 20 | 102.9°F (2024) | 52.0°F (2013) | 0.53 in (2025) |
| September 21 | 100.9°F (2022) | 48.0°F (2021) | 0.26 in (2014) |
| September 22 | 93.0°F (2017) | 45.0°F (2021) | 0.69 in (2024) |
| September 23 | 93.9°F (2022) | 45.0°F (2009) | 0.39 in (2010) |
| September 24 | 96.1°F (2022) | 46.9°F (2009) | 1.52 in (2016) |
| September 25 | 95.0°F (2012) | 48.0°F (2013) | 1.46 in (2017) |
| September 26 | 95.0°F (2021) | 46.9°F (2010) | 1.06 in (2012) |
| September 27 | 98.1°F (2009) | 41.0°F (2010) | 0.64 in (2012) |
| September 28 | 96.1°F (2023) | 45.0°F (2020) | 0.91 in (2013) |
| September 29 | 95.0°F (2023) | 39.0°F (2020) | 0.01 in (2012) |
| September 30 | 95.0°F (2023) | 39.9°F (2011) | 0.31 in (2021) |