September weather in Greenbelt, MD
The average temperature in Greenbelt in September is 69.3°F (59.4°F–79.2°F). Average precipitation: 4.42 inches.
September is a fall month in Greenbelt, and is warmer than the annual average of 55.8°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
79.2°F
Avg Low
59.4°F
Precipitation
4.42 in
Daylight
12h 14m
September records in Greenbelt
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1953) | 43.0°F (1946) | 4.54 in (1952) |
| September 2 | 98.1°F (1962) | 36.0°F (1949) | 2.67 in (1975) |
| September 3 | 100.0°F (1953) | 45.0°F (1964) | 1.25 in (1951) |
| September 4 | 98.1°F (1953) | 46.0°F (1946) | 2.08 in (1943) |
| September 5 | 95.0°F (1985) | 45.0°F (1997) | 1.15 in (1999) |
| September 6 | 97.0°F (1985) | 43.0°F (1976) | 4.88 in (1979) |
| September 7 | 98.1°F (1954) | 43.0°F (1962) | 2.38 in (1996) |
| September 8 | 98.1°F (1954) | 42.1°F (1962) | 4.13 in (2011) |
| September 9 | 95.0°F (1946) | 39.9°F (1986) | 1.42 in (1987) |
| September 10 | 95.0°F (1985) | 35.1°F (1956) | 1.02 in (1950) |
| September 11 | 98.1°F (1983) | 39.0°F (1976) | 2.57 in (1950) |
| September 12 | 98.1°F (1983) | 37.9°F (1967) | 3.74 in (1971) |
| September 13 | 93.9°F (1998) | 36.0°F (1941) | 2.31 in (1944) |
| September 14 | 91.9°F (1952) | 37.9°F (1941) | 1.44 in (1966) |
| September 15 | 93.9°F (1952) | 37.9°F (1946) | 4.40 in (1966) |
| September 16 | 93.0°F (1998) | 37.9°F (1946) | 2.85 in (1999) |
| September 17 | 96.1°F (1991) | 39.9°F (1986) | 2.23 in (1957) |
| September 18 | 96.1°F (1991) | 37.9°F (1986) | 2.88 in (2018) |
| September 19 | 91.0°F (1978) | 36.0°F (1943) | 2.20 in (2003) |
| September 20 | 91.9°F (1965) | 37.0°F (1959) | 1.42 in (1964) |
| September 21 | 90.0°F (1997) | 30.0°F (1956) | 1.53 in (1966) |
| September 22 | 91.9°F (1998) | 33.1°F (1962) | 2.00 in (1979) |
| September 23 | 93.9°F (1970) | 37.0°F (1947) | 2.61 in (2003) |
| September 24 | 93.9°F (1970) | 32.0°F (1963) | 1.82 in (1946) |
| September 25 | 93.0°F (1970) | 30.9°F (1963) | 1.16 in (2001) |
| September 26 | 93.0°F (1970) | 36.0°F (1943) | 5.10 in (1975) |
| September 27 | 93.0°F (1986) | 34.0°F (1947) | 3.53 in (1985) |
| September 28 | 95.0°F (1998) | 32.0°F (1947) | 1.59 in (1993) |
| September 29 | 91.0°F (1945) | 33.1°F (1942) | 2.23 in (2004) |
| September 30 | 93.0°F (1954) | 28.9°F (1942) | 2.28 in (2015) |