September weather in Clark Fork, ID
The average temperature in Clark Fork in September is °F (°F–°F). Average precipitation: 2.16 inches.
September is a fall month in Clark Fork, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 20m.
Avg High
°F
Avg Low
°F
Precipitation
2.16 in
Daylight
12h 20m
September records in Clark Fork
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 84.0°F (1998) | 33.4°F (1999) | 0.70 in (2010) |
| September 2 | 86.5°F (2025) | 35.1°F (2004) | 0.50 in (2016) |
| September 3 | 84.9°F (2003) | 34.3°F (2004) | 0.70 in (1994) |
| September 4 | 84.0°F (2006) | 35.8°F (1996) | 0.10 in (1992) |
| September 5 | 88.2°F (2006) | 31.1°F (1992) | 0.60 in (1985) |
| September 6 | 84.7°F (1998) | 29.1°F (1992) | 0.20 in (1984) |
| September 7 | 83.3°F (2017) | 30.0°F (1992) | 0.40 in (2016) |
| September 8 | 82.9°F (2024) | 31.6°F (2000) | 0.80 in (2003) |
| September 9 | 78.6°F (2011) | 29.8°F (2000) | 0.50 in (1982) |
| September 10 | 79.0°F (2011) | 29.3°F (1988) | 0.70 in (2000) |
| September 11 | 80.2°F (2011) | 27.7°F (2014) | 0.70 in (2005) |
| September 12 | 79.2°F (2002) | 31.1°F (1988) | 0.40 in (1993) |
| September 13 | 77.2°F (2013) | 28.2°F (1992) | 0.80 in (2004) |
| September 14 | 81.9°F (2002) | 29.3°F (1992) | 0.60 in (2004) |
| September 15 | 81.0°F (1998) | 30.6°F (1992) | 1.00 in (2004) |
| September 16 | 79.9°F (2009) | 30.0°F (1992) | 1.40 in (1985) |
| September 17 | 80.6°F (2008) | 24.3°F (1988) | 1.30 in (2016) |
| September 18 | 81.3°F (2008) | 22.1°F (1988) | 1.00 in (2017) |
| September 19 | 79.7°F (2008) | 29.8°F (2017) | 1.00 in (2010) |
| September 20 | 75.2°F (2012) | 28.4°F (1988) | 1.00 in (1984) |
| September 21 | 76.1°F (2012) | 20.7°F (2000) | 1.10 in (2008) |
| September 22 | 75.2°F (2014) | 19.0°F (2000) | 0.30 in (2008) |
| September 23 | 83.1°F (2009) | 24.1°F (2000) | 0.80 in (1992) |
| September 24 | 82.4°F (2011) | 29.7°F (1996) | 1.40 in (1992) |
| September 25 | 78.6°F (2001) | 29.1°F (1996) | 1.00 in (2020) |
| September 26 | 76.5°F (2022) | 25.9°F (1999) | 0.70 in (2019) |
| September 27 | 80.4°F (2022) | 22.5°F (1999) | 1.20 in (1987) |
| September 28 | 79.7°F (2022) | 21.7°F (2019) | 1.50 in (2013) |
| September 29 | 76.3°F (1992) | 21.6°F (2019) | 1.00 in (1986) |
| September 30 | 80.4°F (1992) | 21.2°F (2019) | 1.60 in (2000) |