September weather in Idaho Springs, CO
The average temperature in Idaho Springs in September is °F (°F–°F). Average precipitation: 1.91 inches.
September is a fall month in Idaho Springs, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 15m.
Avg High
°F
Avg Low
°F
Precipitation
1.91 in
Daylight
12h 15m
September records in Idaho Springs
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 75.2°F (2019) | 30.0°F (2003) | 0.20 in (2004) |
| September 2 | 76.1°F (2019) | 29.3°F (2006) | 0.20 in (2003) |
| September 3 | 71.8°F (2017) | 29.7°F (2010) | 0.30 in (2003) |
| September 4 | 72.3°F (2022) | 28.2°F (1999) | 0.30 in (2014) |
| September 5 | 77.2°F (2020) | 29.8°F (2004) | 0.50 in (2014) |
| September 6 | 73.6°F (2022) | 27.1°F (2004) | 0.40 in (2003) |
| September 7 | 72.3°F (2022) | 25.0°F (2001) | 1.00 in (2003) |
| September 8 | 73.4°F (2022) | 14.7°F (2020) | 0.70 in (2001) |
| September 9 | 74.1°F (2021) | 14.9°F (2020) | 1.60 in (2013) |
| September 10 | 74.1°F (2021) | 25.7°F (2020) | 1.80 in (2013) |
| September 11 | 71.2°F (2021) | 23.5°F (2014) | 1.00 in (2013) |
| September 12 | 71.6°F (2018) | 19.4°F (2014) | 2.00 in (2013) |
| September 13 | 72.9°F (2018) | 19.9°F (2003) | 0.40 in (2001) |
| September 14 | 70.3°F (2018) | 22.1°F (2003) | 0.60 in (2011) |
| September 15 | 69.1°F (2000) | 25.2°F (2004) | 0.80 in (2009) |
| September 16 | 71.1°F (2018) | 24.8°F (2006) | 0.20 in (2002) |
| September 17 | 68.9°F (2018) | 22.1°F (2006) | 0.10 in (2024) |
| September 18 | 70.5°F (2018) | 19.4°F (2003) | 0.30 in (2002) |
| September 19 | 72.3°F (2010) | 23.7°F (2002) | 0.30 in (2018) |
| September 20 | 68.4°F (2005) | 24.3°F (1999) | 0.60 in (2006) |
| September 21 | 67.6°F (2017) | 20.3°F (2009) | 1.00 in (2004) |
| September 22 | 66.0°F (2007) | 16.5°F (2004) | 0.70 in (2006) |
| September 23 | 64.2°F (2018) | 18.0°F (2000) | 1.00 in (2025) |
| September 24 | 68.9°F (2020) | 15.8°F (2006) | 0.20 in (2000) |
| September 25 | 66.4°F (2020) | 15.6°F (2000) | 0.20 in (2004) |
| September 26 | 68.0°F (2010) | 21.0°F (2017) | 0.40 in (2002) |
| September 27 | 66.2°F (2010) | 21.9°F (2013) | 0.30 in (2017) |
| September 28 | 70.3°F (2010) | 11.5°F (1999) | 0.30 in (2017) |
| September 29 | 66.2°F (2018) | 29.8°F (2005) | 0.40 in (2004) |
| September 30 | 66.6°F (2018) | 19.4°F (2007) | 0.30 in (2022) |