September weather in New Windsor, MD
The average temperature in New Windsor in September is 66.1°F (55.2°F–77.0°F). Average precipitation: 5.18 inches.
September is a fall month in New Windsor, and is warmer than the annual average of 53°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a wet month.
Avg High
77.0°F
Avg Low
55.2°F
Precipitation
5.18 in
Daylight
12h 15m
September records in New Windsor
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1980) | 43.0°F (1976) | 1.60 in (1975) |
| September 2 | 98.1°F (1980) | 42.1°F (1963) | 5.49 in (2021) |
| September 3 | 93.9°F (1966) | 39.9°F (1967) | 1.82 in (1974) |
| September 4 | 98.1°F (2018) | 42.1°F (1958) | 3.13 in (2003) |
| September 5 | 97.0°F (2018) | 42.1°F (1965) | 1.91 in (2011) |
| September 6 | 96.1°F (1983) | 39.9°F (1976) | 3.30 in (1979) |
| September 7 | 98.1°F (2023) | 36.0°F (1976) | 2.80 in (2008) |
| September 8 | 95.0°F (2023) | 43.0°F (1956) | 1.95 in (1987) |
| September 9 | 97.0°F (2023) | 37.0°F (1986) | 1.84 in (2021) |
| September 10 | 98.1°F (1983) | 34.0°F (1956) | 3.14 in (2018) |
| September 11 | 98.1°F (1983) | 37.0°F (1976) | 1.12 in (2015) |
| September 12 | 97.0°F (1983) | 37.0°F (1958) | 1.32 in (1960) |
| September 13 | 91.9°F (1998) | 35.1°F (1958) | 1.46 in (1978) |
| September 14 | 91.0°F (1998) | 33.1°F (1964) | 7.50 in (1966) |
| September 15 | 93.0°F (1970) | 36.0°F (1964) | 1.63 in (1966) |
| September 16 | 93.0°F (1970) | 36.0°F (1985) | 3.20 in (1999) |
| September 17 | 91.9°F (1991) | 35.1°F (1984) | 1.15 in (1996) |
| September 18 | 91.0°F (1965) | 30.9°F (1959) | 2.68 in (2018) |
| September 19 | 93.0°F (1983) | 33.1°F (1959) | 3.55 in (2012) |
| September 20 | 90.0°F (1963) | 34.0°F (2020) | 1.17 in (1966) |
| September 21 | 91.0°F (1965) | 25.0°F (1988) | 1.85 in (2001) |
| September 22 | 93.9°F (1970) | 33.1°F (2020) | 2.64 in (1979) |
| September 23 | 93.0°F (1970) | 32.0°F (1976) | 3.69 in (2021) |
| September 24 | 93.9°F (1970) | 28.0°F (1963) | 1.20 in (2023) |
| September 25 | 93.9°F (1970) | 24.1°F (1963) | 2.48 in (1975) |
| September 26 | 91.9°F (1970) | 30.9°F (1963) | 2.22 in (1975) |
| September 27 | 90.0°F (1986) | 35.1°F (1978) | 2.33 in (2002) |
| September 28 | 89.1°F (1998) | 30.0°F (1957) | 4.65 in (2004) |
| September 29 | 87.1°F (2019) | 32.0°F (1978) | 1.85 in (1963) |
| September 30 | 91.9°F (1986) | 33.1°F (1962) | 2.49 in (2015) |