September weather in Thurmont, MD
The average temperature in Thurmont in September is 66.2°F (57.5°F–74.9°F). Average precipitation: 5.32 inches.
September is a fall month in Thurmont, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 17.4°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 15m. For travel, September is a wet month.
Avg High
74.9°F
Avg Low
57.5°F
Precipitation
5.32 in
Daylight
12h 15m
September records in Thurmont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2010) | 46.0°F (2003) | 1.02 in (1981) |
| September 2 | 91.9°F (2010) | 48.0°F (1987) | 2.50 in (2006) |
| September 3 | 88.0°F (2008) | 52.0°F (1976) | 1.45 in (1974) |
| September 4 | 88.0°F (2008) | 44.1°F (1997) | 3.30 in (1993) |
| September 5 | 89.1°F (1971) | 46.9°F (1974) | 3.10 in (1979) |
| September 6 | 90.0°F (1998) | 45.0°F (1988) | 6.30 in (1979) |
| September 7 | 88.0°F (1998) | 39.0°F (2003) | 1.37 in (2011) |
| September 8 | 88.0°F (2007) | 42.1°F (2003) | 1.63 in (1987) |
| September 9 | 87.1°F (2002) | 43.0°F (1986) | 0.86 in (2004) |
| September 10 | 90.0°F (1983) | 46.0°F (1975) | 2.70 in (1968) |
| September 11 | 91.0°F (1983) | 42.1°F (1976) | 1.64 in (1992) |
| September 12 | 89.1°F (1974) | 43.0°F (1994) | 1.22 in (1971) |
| September 13 | 87.1°F (1998) | 41.0°F (1985) | 1.30 in (1996) |
| September 14 | 88.0°F (1998) | 37.9°F (1975) | 4.02 in (1973) |
| September 15 | 87.1°F (1998) | 44.1°F (2001) | 0.71 in (2011) |
| September 16 | 86.0°F (1998) | 36.0°F (2003) | 3.20 in (1976) |
| September 17 | 84.9°F (1970) | 39.0°F (1986) | 1.65 in (1976) |
| September 18 | 82.0°F (1998) | 39.0°F (1990) | 2.81 in (2004) |
| September 19 | 82.9°F (1983) | 42.1°F (1969) | 2.51 in (2003) |
| September 20 | 82.9°F (1983) | 41.0°F (1979) | 0.70 in (1977) |
| September 21 | 84.0°F (1983) | 39.9°F (2003) | 1.62 in (1971) |
| September 22 | 89.1°F (2010) | 39.9°F (1999) | 2.35 in (1979) |
| September 23 | 87.1°F (2010) | 37.9°F (1974) | 2.06 in (2003) |
| September 24 | 90.0°F (2010) | 34.0°F (1974) | 1.74 in (2001) |
| September 25 | 89.1°F (2007) | 39.9°F (1974) | 4.20 in (1975) |
| September 26 | 89.1°F (2007) | 42.1°F (2000) | 3.88 in (1975) |
| September 27 | 86.0°F (1998) | 37.0°F (1989) | 2.40 in (1982) |
| September 28 | 81.0°F (1998) | 36.0°F (2003) | 3.90 in (2004) |
| September 29 | 77.0°F (1980) | 28.0°F (2003) | 1.60 in (1997) |
| September 30 | 84.9°F (1986) | 23.0°F (2003) | 2.45 in (1999) |