September weather in Loveland, CO
The average temperature in Loveland in September is 61.5°F (44.2°F–78.9°F). Average precipitation: 1.36 inches.
September is a fall month in Loveland, and is warmer than the annual average of 48.7°F. Daily temperatures swing about 34.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
78.9°F
Avg Low
44.2°F
Precipitation
1.36 in
Daylight
12h 15m
September records in Loveland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (2011) | 43.0°F (2005) | 0.17 in (1998) |
| September 2 | 98.1°F (2019) | 41.0°F (2005) | 0.19 in (1993) |
| September 3 | 102.9°F (2019) | 36.0°F (1993) | 0.11 in (2022) |
| September 4 | 100.0°F (2017) | 37.9°F (2006) | 0.35 in (2021) |
| September 5 | 95.0°F (1998) | 42.1°F (2006) | 0.25 in (2004) |
| September 6 | 100.0°F (2019) | 39.0°F (2025) | 0.18 in (1996) |
| September 7 | 100.0°F (2022) | 37.0°F (2010) | 0.31 in (1993) |
| September 8 | 97.0°F (2022) | 35.1°F (2010) | 1.09 in (1989) |
| September 9 | 97.0°F (2022) | 30.9°F (2020) | 0.77 in (2002) |
| September 10 | 97.0°F (2021) | 32.0°F (2020) | 0.63 in (2013) |
| September 11 | 97.0°F (2021) | 35.1°F (1989) | 0.41 in (2023) |
| September 12 | 97.0°F (2021) | 33.1°F (1989) | 2.32 in (2013) |
| September 13 | 96.1°F (1990) | 28.9°F (2014) | 0.79 in (1993) |
| September 14 | 96.1°F (2018) | 27.0°F (1993) | 1.15 in (1996) |
| September 15 | 93.0°F (2018) | 36.0°F (1993) | 0.81 in (2011) |
| September 16 | 96.1°F (2000) | 37.0°F (2005) | 1.89 in (2013) |
| September 17 | 93.9°F (2018) | 32.0°F (2006) | 0.31 in (1993) |
| September 18 | 93.0°F (2018) | 30.9°F (2006) | 0.92 in (1993) |
| September 19 | 91.0°F (2004) | 33.1°F (1991) | 0.71 in (1997) |
| September 20 | 93.0°F (2022) | 32.0°F (1995) | 0.63 in (1998) |
| September 21 | 91.0°F (2010) | 30.9°F (1995) | 0.29 in (1997) |
| September 22 | 91.0°F (2007) | 25.0°F (1995) | 0.64 in (2004) |
| September 23 | 88.0°F (1992) | 32.0°F (1991) | 0.47 in (2000) |
| September 24 | 90.0°F (2018) | 28.9°F (2000) | 1.17 in (2025) |
| September 25 | 90.0°F (2020) | 28.9°F (2000) | 1.27 in (2007) |
| September 26 | 89.1°F (2011) | 32.0°F (1996) | 0.29 in (2012) |
| September 27 | 93.9°F (2024) | 25.0°F (1996) | 0.18 in (1999) |
| September 28 | 91.0°F (2015) | 30.9°F (1999) | 1.24 in (1990) |
| September 29 | 91.0°F (2011) | 27.0°F (1999) | 0.16 in (1995) |
| September 30 | 90.0°F (2024) | 32.0°F (2005) | 0.58 in (1991) |