September weather in Hillrose, CO
The average temperature in Hillrose in September is 63.2°F (45.2°F–81.1°F). Average precipitation: 1.36 inches. Average snowfall is 0.5 inches.
September is a fall month in Hillrose, and is warmer than the annual average of 48.3°F. Daily temperatures swing about 35.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
81.1°F
Avg Low
45.2°F
Precipitation
1.36 in
Snow
0.5 in
September records in Hillrose
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2011) | 44.1°F (2020) | 0.75 in (2006) |
| September 2 | 100.9°F (2011) | 43.0°F (2020) | 0.10 in (1997) |
| September 3 | 102.0°F (2019) | 43.0°F (2020) | 0.03 in (1993) |
| September 4 | 100.0°F (2013) | 39.9°F (2011) | 1.13 in (2021) |
| September 5 | 99.0°F (2013) | 39.0°F (2011) | 0.47 in (2008) |
| September 6 | 100.9°F (2013) | 37.9°F (2025) | 0.08 in (1995) |
| September 7 | 102.9°F (2013) | 37.9°F (2025) | 0.27 in (2019) |
| September 8 | 102.0°F (2022) | 37.0°F (2020) | 0.46 in (2001) |
| September 9 | 104.0°F (2022) | 32.0°F (2020) | 1.79 in (2009) |
| September 10 | 97.0°F (2021) | 30.9°F (2020) | 0.68 in (1995) |
| September 11 | 100.0°F (2021) | 34.0°F (2016) | 0.19 in (2020) |
| September 12 | 98.1°F (2018) | 34.0°F (2014) | 0.12 in (2006) |
| September 13 | 97.0°F (2018) | 34.0°F (2014) | 0.59 in (1998) |
| September 14 | 99.0°F (2018) | 35.1°F (2014) | 0.36 in (1993) |
| September 15 | 97.0°F (2015) | 41.0°F (2014) | 1.14 in (2004) |
| September 16 | 96.1°F (2018) | 37.0°F (2016) | 0.68 in (2001) |
| September 17 | 96.1°F (2018) | 36.0°F (2016) | 0.53 in (2025) |
| September 18 | 95.0°F (2018) | 39.0°F (2012) | 0.34 in (1993) |
| September 19 | 93.0°F (2014) | 37.0°F (2015) | 1.40 in (1996) |
| September 20 | 93.0°F (2016) | 37.0°F (2015) | 0.85 in (2000) |
| September 21 | 96.1°F (2022) | 36.0°F (2017) | 0.72 in (1995) |
| September 22 | 93.9°F (2017) | 33.1°F (2021) | 0.82 in (2024) |
| September 23 | 91.0°F (2020) | 34.0°F (2021) | 1.80 in (2013) |
| September 24 | 91.0°F (2016) | 34.0°F (2016) | 1.60 in (2013) |
| September 25 | 91.0°F (2020) | 33.1°F (2016) | 0.06 in (2000) |
| September 26 | 90.0°F (2014) | 30.9°F (2016) | 0.43 in (1996) |
| September 27 | 93.0°F (2024) | 33.1°F (2016) | 0.65 in (2012) |
| September 28 | 93.0°F (2021) | 32.0°F (2018) | 0.35 in (1999) |
| September 29 | 90.0°F (2024) | 28.9°F (2020) | 0.95 in (1999) |
| September 30 | 90.0°F (2019) | 30.0°F (2020) | 1.04 in (2014) |