September weather in Rochester, NH
The average temperature in Rochester in September is °F (°F–°F). Average precipitation: 4.12 inches.
September is a fall month in Rochester, and is cooler than the annual average of 0°F. Expect about 9 days with precipitation. Daylight averages about 12h 17m.
Avg High
°F
Avg Low
°F
Precipitation
4.12 in
Daylight
12h 17m
September records in Rochester
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 86.0°F (2011) | 55.9°F (2011) | 1.00 in (2001) |
| September 2 | 80.1°F (2012) | 57.0°F (2011) | 0.30 in (2003) |
| September 3 | 78.1°F (2011) | 52.0°F (2012) | 0.40 in (1996) |
| September 4 | 88.0°F (2011) | 52.0°F (2012) | 1.20 in (1992) |
| September 5 | 90.0°F (2011) | 59.0°F (2012) | 1.35 in (2012) |
| September 6 | 84.9°F (2011) | 60.1°F (2011) | 1.10 in (1994) |
| September 7 | 79.0°F (2012) | 59.0°F (2011) | 4.90 in (2008) |
| September 8 | 87.1°F (2012) | 57.0°F (2011) | 1.19 in (2011) |
| September 9 | 84.0°F (2012) | 57.0°F (2011) | 1.31 in (1993) |
| September 10 | 80.1°F (2011) | 51.1°F (2012) | 1.19 in (2004) |
| September 11 | 78.1°F (2011) | 41.0°F (2012) | 4.45 in (1999) |
| September 12 | 77.0°F (2012) | 42.1°F (2012) | 1.63 in (2007) |
| September 13 | 84.0°F (2011) | 46.9°F (2012) | 0.58 in (2000) |
| September 14 | 86.0°F (2011) | 48.0°F (2012) | 0.78 in (1997) |
| September 15 | 87.1°F (2011) | 52.0°F (2012) | 0.45 in (2006) |
| September 16 | 73.9°F (2012) | 43.0°F (2012) | 1.32 in (2003) |
| September 17 | 69.1°F (2012) | 35.1°F (2011) | 4.75 in (1999) |
| September 18 | 75.9°F (2012) | 37.0°F (2011) | 1.25 in (2004) |
| September 19 | 70.0°F (2012) | 37.0°F (2011) | 1.35 in (2004) |
| September 20 | 72.0°F (2012) | 37.0°F (2012) | 1.56 in (1991) |
| September 21 | 66.0°F (2011) | 37.0°F (2012) | 0.60 in (2001) |
| September 22 | 78.1°F (2011) | 45.0°F (2012) | 0.42 in (2001) |
| September 23 | 71.1°F (2011) | 55.0°F (2012) | 0.83 in (1998) |
| September 24 | 73.0°F (2011) | 37.0°F (2012) | 3.81 in (1994) |
| September 25 | 79.0°F (2011) | 36.0°F (2012) | 0.62 in (1991) |
| September 26 | 84.0°F (2011) | 36.0°F (2012) | 2.63 in (1991) |
| September 27 | 82.9°F (2011) | 54.0°F (2011) | 1.85 in (2008) |
| September 28 | 80.1°F (2011) | 39.0°F (2012) | 2.01 in (1993) |
| September 29 | 73.0°F (2011) | 43.0°F (2012) | 1.05 in (2012) |
| September 30 | 64.9°F (2011) | 50.0°F (2012) | 0.95 in (2011) |