September weather in Dayton, ID
The average temperature in Dayton in September is 59.9°F (43.0°F–76.9°F). Average precipitation: 1.48 inches.
September is a fall month in Dayton, and is warmer than the annual average of 47°F. Daily temperatures swing about 33.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
76.9°F
Avg Low
43.0°F
Precipitation
1.48 in
Daylight
12h 16m
September records in Dayton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2022) | 32.0°F (1965) | 0.28 in (2012) |
| September 2 | 93.0°F (1995) | 36.0°F (2008) | 0.93 in (2013) |
| September 3 | 95.0°F (2017) | 33.1°F (1966) | 1.20 in (1995) |
| September 4 | 96.1°F (2022) | 32.0°F (1965) | 1.18 in (2007) |
| September 5 | 97.0°F (2022) | 35.1°F (1969) | 0.39 in (2007) |
| September 6 | 98.1°F (2022) | 32.0°F (1996) | 0.91 in (2002) |
| September 7 | 98.1°F (2022) | 32.0°F (2010) | 0.99 in (1970) |
| September 8 | 90.0°F (1969) | 28.9°F (1973) | 0.58 in (2002) |
| September 9 | 91.0°F (1990) | 28.9°F (2020) | 0.65 in (1991) |
| September 10 | 91.0°F (2021) | 33.1°F (2020) | 0.45 in (1967) |
| September 11 | 91.0°F (1990) | 33.1°F (2010) | 0.77 in (2019) |
| September 12 | 89.1°F (1990) | 30.9°F (1999) | 1.25 in (1985) |
| September 13 | 93.0°F (1990) | 30.0°F (1967) | 0.40 in (2016) |
| September 14 | 93.9°F (1990) | 28.9°F (1993) | 0.53 in (2009) |
| September 15 | 91.9°F (1990) | 28.9°F (1970) | 1.15 in (2006) |
| September 16 | 90.0°F (2014) | 28.9°F (1965) | 1.90 in (2015) |
| September 17 | 91.0°F (1981) | 28.9°F (1965) | 0.65 in (2002) |
| September 18 | 89.1°F (1981) | 23.0°F (1965) | 0.20 in (1986) |
| September 19 | 87.1°F (2010) | 12.9°F (1965) | 0.58 in (2017) |
| September 20 | 87.1°F (2022) | 23.0°F (1983) | 0.91 in (1990) |
| September 21 | 86.0°F (2022) | 25.0°F (1983) | 0.51 in (2023) |
| September 22 | 86.0°F (1966) | 26.1°F (1995) | 0.81 in (2016) |
| September 23 | 88.0°F (2001) | 26.1°F (1995) | 1.30 in (2016) |
| September 24 | 89.1°F (2001) | 21.0°F (1970) | 1.10 in (2016) |
| September 25 | 90.0°F (1994) | 24.1°F (1970) | 1.10 in (1986) |
| September 26 | 89.1°F (1994) | 24.1°F (1970) | 0.56 in (1982) |
| September 27 | 88.0°F (2010) | 25.0°F (2020) | 1.30 in (2014) |
| September 28 | 89.1°F (2024) | 26.1°F (1984) | 2.20 in (1986) |
| September 29 | 88.0°F (2024) | 21.9°F (1985) | 1.23 in (2019) |
| September 30 | 84.9°F (1989) | 19.9°F (1985) | 0.67 in (1983) |