September weather in Keene, NH
The average temperature in Keene in September is 60.1°F (47.0°F–73.2°F). Average precipitation: 4.26 inches.
September is a fall month in Keene, and is warmer than the annual average of 45.4°F. Daily temperatures swing about 26.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
73.2°F
Avg Low
47.0°F
Precipitation
4.26 in
Daylight
12h 17m
September records in Keene
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2010) | 35.1°F (1926) | 3.15 in (1950) |
| September 2 | 100.9°F (1953) | 33.1°F (1896) | 2.03 in (2021) |
| September 3 | 97.0°F (2010) | 33.1°F (1916) | 2.50 in (1905) |
| September 4 | 93.0°F (1961) | 37.0°F (1908) | 2.06 in (1974) |
| September 5 | 90.0°F (1953) | 33.1°F (1896) | 1.64 in (1966) |
| September 6 | 90.0°F (1900) | 28.9°F (1924) | 2.73 in (2011) |
| September 7 | 90.0°F (1901) | 33.1°F (1904) | 2.71 in (2008) |
| September 8 | 93.9°F (2007) | 32.0°F (1903) | 1.04 in (1969) |
| September 9 | 93.0°F (1959) | 30.0°F (1938) | 1.95 in (2004) |
| September 10 | 93.9°F (2002) | 30.0°F (1913) | 1.54 in (1894) |
| September 11 | 93.0°F (1931) | 26.1°F (1917) | 3.44 in (1954) |
| September 12 | 93.0°F (2013) | 28.0°F (1917) | 2.24 in (2007) |
| September 13 | 91.0°F (1948) | 32.0°F (1943) | 3.91 in (2013) |
| September 14 | 91.0°F (1903) | 25.0°F (1911) | 2.23 in (2022) |
| September 15 | 90.0°F (1915) | 25.0°F (1913) | 2.80 in (1916) |
| September 16 | 95.0°F (1939) | 24.1°F (1964) | 2.43 in (1912) |
| September 17 | 88.0°F (1991) | 28.9°F (1935) | 4.37 in (1999) |
| September 18 | 91.9°F (1906) | 30.0°F (1919) | 2.16 in (2004) |
| September 19 | 90.0°F (1983) | 28.9°F (1932) | 2.37 in (2012) |
| September 20 | 91.0°F (1983) | 25.0°F (1964) | 2.36 in (1938) |
| September 21 | 91.9°F (1895) | 25.0°F (1962) | 2.98 in (1938) |
| September 22 | 91.0°F (1914) | 23.0°F (1904) | 1.52 in (1979) |
| September 23 | 93.0°F (1895) | 21.0°F (1904) | 1.62 in (1907) |
| September 24 | 89.1°F (1959) | 21.0°F (1963) | 1.92 in (2003) |
| September 25 | 90.0°F (2017) | 23.0°F (1950) | 1.50 in (1965) |
| September 26 | 89.1°F (2017) | 23.0°F (1925) | 2.23 in (1918) |
| September 27 | 90.0°F (2007) | 25.0°F (1947) | 1.56 in (1975) |
| September 28 | 87.1°F (2017) | 24.1°F (1947) | 1.38 in (1909) |
| September 29 | 86.0°F (2014) | 19.0°F (1914) | 2.29 in (1907) |
| September 30 | 82.9°F (1905) | 25.0°F (1903) | 3.11 in (2015) |