September weather in Jamestown, NY
The average temperature in Jamestown in September is 61.2°F (49.5°F–73.0°F). Average precipitation: 4.19 inches.
September is a fall month in Jamestown, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 23.5°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
73.0°F
Avg Low
49.5°F
Precipitation
4.19 in
Daylight
12h 16m
September records in Jamestown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (2012) | 37.9°F (1976) | 0.90 in (2016) |
| September 2 | 89.1°F (2010) | 28.0°F (1986) | 1.42 in (2003) |
| September 3 | 90.0°F (1991) | 33.1°F (1985) | 1.44 in (2006) |
| September 4 | 93.0°F (2011) | 30.9°F (1987) | 1.46 in (1984) |
| September 5 | 89.1°F (2018) | 35.1°F (1974) | 1.02 in (2017) |
| September 6 | 91.0°F (2018) | 35.1°F (1962) | 2.00 in (2022) |
| September 7 | 89.1°F (2007) | 30.9°F (1984) | 1.48 in (1993) |
| September 8 | 89.1°F (2015) | 28.9°F (1986) | 0.76 in (1987) |
| September 9 | 90.0°F (2002) | 30.0°F (1986) | 3.70 in (2004) |
| September 10 | 91.9°F (2002) | 30.0°F (1984) | 1.83 in (2018) |
| September 11 | 90.0°F (2013) | 37.0°F (1995) | 0.72 in (1976) |
| September 12 | 89.1°F (1983) | 30.0°F (1985) | 0.80 in (1997) |
| September 13 | 84.9°F (1988) | 28.0°F (1985) | 0.69 in (1993) |
| September 14 | 88.0°F (1990) | 33.1°F (1975) | 2.85 in (1979) |
| September 15 | 88.0°F (1991) | 28.9°F (1986) | 2.79 in (1989) |
| September 16 | 93.0°F (1991) | 27.0°F (1985) | 1.50 in (2002) |
| September 17 | 84.9°F (1991) | 27.0°F (1985) | 1.33 in (2010) |
| September 18 | 82.9°F (2021) | 28.9°F (1986) | 2.21 in (2004) |
| September 19 | 82.9°F (1988) | 30.9°F (2020) | 0.89 in (1975) |
| September 20 | 84.0°F (1983) | 30.9°F (2020) | 1.20 in (1977) |
| September 21 | 84.9°F (1978) | 32.0°F (2020) | 1.15 in (1987) |
| September 22 | 87.1°F (2018) | 30.9°F (1991) | 1.75 in (1992) |
| September 23 | 86.0°F (2019) | 30.9°F (1991) | 0.95 in (2021) |
| September 24 | 87.1°F (2017) | 26.1°F (1974) | 1.20 in (1990) |
| September 25 | 90.0°F (2017) | 26.1°F (1974) | 1.60 in (1977) |
| September 26 | 89.1°F (2017) | 30.0°F (1976) | 1.33 in (2018) |
| September 27 | 89.1°F (2017) | 34.0°F (1978) | 1.56 in (2005) |
| September 28 | 87.1°F (2017) | 30.0°F (1984) | 1.80 in (1962) |
| September 29 | 82.9°F (1990) | 27.0°F (1978) | 1.44 in (2006) |
| September 30 | 81.0°F (1986) | 28.9°F (1985) | 1.85 in (2015) |