September weather in Clayton, ID
The average temperature in Clayton in September is °F (°F–°F). Average precipitation: 1.46 inches.
September is a fall month in Clayton, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 17m.
Avg High
°F
Avg Low
°F
Precipitation
1.46 in
Daylight
12h 17m
September records in Clayton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 78.1°F (1998) | 25.0°F (2008) | 0.30 in (2000) |
| September 2 | 79.0°F (1998) | 23.2°F (2008) | 0.40 in (2000) |
| September 3 | 79.3°F (2017) | 23.2°F (2000) | 1.10 in (2023) |
| September 4 | 79.3°F (2020) | 24.4°F (1999) | 0.60 in (2015) |
| September 5 | 76.6°F (2020) | 23.0°F (1996) | 0.50 in (1984) |
| September 6 | 74.8°F (2020) | 18.5°F (1996) | 0.60 in (2001) |
| September 7 | 73.6°F (2021) | 16.2°F (1992) | 0.80 in (1985) |
| September 8 | 76.5°F (2021) | 19.4°F (2020) | 1.00 in (1986) |
| September 9 | 73.8°F (2021) | 24.4°F (2000) | 0.70 in (2010) |
| September 10 | 73.0°F (1996) | 16.7°F (2005) | 0.60 in (2019) |
| September 11 | 73.6°F (2022) | 19.9°F (2005) | 1.30 in (1997) |
| September 12 | 71.2°F (2022) | 21.0°F (1989) | 0.40 in (2004) |
| September 13 | 70.3°F (1995) | 21.6°F (2003) | 0.50 in (2001) |
| September 14 | 77.2°F (2000) | 22.5°F (1991) | 0.20 in (1985) |
| September 15 | 75.2°F (2000) | 20.8°F (1991) | 0.60 in (2017) |
| September 16 | 73.8°F (1995) | 20.5°F (2006) | 0.40 in (2006) |
| September 17 | 71.1°F (2020) | 19.4°F (1996) | 0.40 in (1989) |
| September 18 | 68.7°F (2009) | 18.9°F (1996) | 1.00 in (2017) |
| September 19 | 67.1°F (2009) | 23.9°F (2013) | 0.50 in (1986) |
| September 20 | 67.3°F (2012) | 19.2°F (1995) | 0.70 in (2017) |
| September 21 | 68.7°F (2012) | 13.3°F (1995) | 0.20 in (2014) |
| September 22 | 70.3°F (1994) | 14.0°F (2000) | 0.40 in (2016) |
| September 23 | 70.9°F (1994) | 12.0°F (2000) | 0.40 in (2005) |
| September 24 | 72.1°F (2001) | 15.6°F (2017) | 1.10 in (1992) |
| September 25 | 70.9°F (1994) | 18.9°F (2017) | 0.70 in (2013) |
| September 26 | 70.3°F (1991) | 15.6°F (1999) | 1.10 in (1982) |
| September 27 | 71.8°F (1994) | 8.2°F (1999) | 0.50 in (1986) |
| September 28 | 71.4°F (2024) | 6.8°F (1999) | 0.80 in (1982) |
| September 29 | 68.7°F (2010) | 13.6°F (2019) | 1.20 in (2013) |
| September 30 | 68.7°F (1992) | 12.4°F (2019) | 0.80 in (2013) |