September weather in Monument, CO
The average temperature in Monument in September is 59.6°F (44.1°F–75.1°F). Average precipitation: 1.70 inches.
September is a fall month in Monument, and is warmer than the annual average of 46.7°F. Daily temperatures swing about 31°F between overnight low and afternoon high. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
75.1°F
Avg Low
44.1°F
Precipitation
1.70 in
Daylight
12h 14m
September records in Monument
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2021) | 43.0°F (2010) | 0.34 in (2015) |
| September 2 | 91.9°F (2019) | 41.0°F (2010) | 0.22 in (2013) |
| September 3 | 95.0°F (2019) | 36.0°F (2010) | 0.88 in (2011) |
| September 4 | 91.9°F (2014) | 36.0°F (2010) | 0.44 in (2018) |
| September 5 | 90.0°F (2020) | 37.9°F (2011) | 0.42 in (2014) |
| September 6 | 90.0°F (2019) | 37.9°F (2011) | 0.25 in (2018) |
| September 7 | 93.0°F (2020) | 37.0°F (2010) | 0.31 in (2019) |
| September 8 | 91.0°F (2020) | 30.9°F (2020) | 0.06 in (2020) |
| September 9 | 87.1°F (2013) | 26.1°F (2020) | 0.55 in (2020) |
| September 10 | 91.0°F (2021) | 26.1°F (2020) | 0.02 in (2014) |
| September 11 | 95.0°F (2021) | 30.9°F (2020) | 0.19 in (2013) |
| September 12 | 95.0°F (2021) | 32.0°F (2014) | 0.87 in (2013) |
| September 13 | 90.0°F (2018) | 33.1°F (2014) | 2.02 in (2013) |
| September 14 | 88.0°F (2018) | 35.1°F (2014) | 0.40 in (2013) |
| September 15 | 87.1°F (2018) | 36.0°F (2012) | 2.20 in (2011) |
| September 16 | 87.1°F (2018) | 35.1°F (2012) | 0.77 in (2011) |
| September 17 | 90.0°F (2021) | 36.0°F (2016) | 0.38 in (2013) |
| September 18 | 88.0°F (2018) | 34.0°F (2012) | 0.34 in (2009) |
| September 19 | 89.1°F (2018) | 33.1°F (2012) | 0.00 in (2009) |
| September 20 | 88.0°F (2010) | 37.0°F (2009) | 0.05 in (2013) |
| September 21 | 90.0°F (2010) | 34.0°F (2011) | 0.05 in (2009) |
| September 22 | 87.1°F (2020) | 30.9°F (2009) | 0.27 in (2009) |
| September 23 | 84.0°F (2018) | 30.0°F (2009) | 0.44 in (2013) |
| September 24 | 84.0°F (2018) | 33.1°F (2013) | 1.11 in (2017) |
| September 25 | 84.0°F (2018) | 33.1°F (2013) | 0.10 in (2009) |
| September 26 | 90.0°F (2020) | 30.9°F (2016) | 0.84 in (2012) |
| September 27 | 86.0°F (2014) | 32.0°F (2016) | 0.15 in (2017) |
| September 28 | 84.0°F (2015) | 27.0°F (2013) | 0.55 in (2017) |
| September 29 | 86.0°F (2010) | 28.0°F (2013) | 0.17 in (2017) |
| September 30 | 82.0°F (2009) | 36.0°F (2009) | 0.44 in (2015) |