September weather in Claremont, NH
The average temperature in Claremont in September is 58.8°F (46.6°F–71.0°F). Average precipitation: 3.53 inches.
September is a fall month in Claremont, and is warmer than the annual average of 44.3°F. Daily temperatures swing about 24.4°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
71.0°F
Avg Low
46.6°F
Precipitation
3.53 in
Daylight
12h 17m
September records in Claremont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (2010) | 39.0°F (2003) | 1.65 in (1954) |
| September 2 | 91.9°F (2010) | 35.1°F (1992) | 1.57 in (2021) |
| September 3 | 93.0°F (2010) | 35.1°F (1991) | 1.12 in (1931) |
| September 4 | 91.0°F (1999) | 34.0°F (2001) | 1.04 in (1988) |
| September 5 | 90.0°F (1999) | 32.0°F (2000) | 1.83 in (1966) |
| September 6 | 89.1°F (2018) | 30.9°F (2000) | 2.56 in (1985) |
| September 7 | 88.0°F (2023) | 32.0°F (2000) | 2.54 in (2008) |
| September 8 | 91.0°F (2007) | 34.0°F (2000) | 2.06 in (1987) |
| September 9 | 90.0°F (2002) | 32.0°F (1980) | 2.50 in (1934) |
| September 10 | 93.9°F (2002) | 36.0°F (2025) | 1.98 in (1929) |
| September 11 | 91.9°F (2002) | 30.9°F (1995) | 1.89 in (1999) |
| September 12 | 91.0°F (2013) | 30.9°F (1977) | 3.07 in (1954) |
| September 13 | 84.9°F (2005) | 32.0°F (1991) | 2.67 in (1960) |
| September 14 | 88.0°F (2005) | 33.1°F (1991) | 1.23 in (1944) |
| September 15 | 87.1°F (2005) | 33.1°F (2001) | 1.77 in (1944) |
| September 16 | 88.0°F (1993) | 30.0°F (1995) | 1.14 in (1933) |
| September 17 | 87.1°F (1991) | 32.0°F (2013) | 6.00 in (1999) |
| September 18 | 84.0°F (1992) | 32.0°F (2013) | 1.34 in (1976) |
| September 19 | 84.9°F (1992) | 28.0°F (2020) | 1.50 in (2012) |
| September 20 | 82.9°F (2024) | 26.1°F (2020) | 1.71 in (1938) |
| September 21 | 82.9°F (1998) | 26.1°F (2020) | 3.28 in (1938) |
| September 22 | 84.0°F (1980) | 26.1°F (2020) | 1.83 in (1938) |
| September 23 | 84.0°F (1980) | 26.1°F (2020) | 1.93 in (1992) |
| September 24 | 82.0°F (2017) | 27.0°F (1992) | 1.86 in (1956) |
| September 25 | 88.0°F (2017) | 27.0°F (1992) | 2.15 in (1965) |
| September 26 | 89.1°F (2017) | 27.0°F (1992) | 2.06 in (2025) |
| September 27 | 89.1°F (2017) | 28.0°F (2001) | 1.07 in (2008) |
| September 28 | 88.0°F (2017) | 28.0°F (1991) | 3.04 in (1985) |
| September 29 | 82.9°F (2025) | 21.0°F (2000) | 0.91 in (2012) |
| September 30 | 79.0°F (2020) | 21.0°F (2000) | 1.73 in (2015) |