September weather in Rising Sun, MD
The average temperature in Rising Sun in September is 65.8°F (55.7°F–75.9°F). Average precipitation: 5.17 inches.
September is a fall month in Rising Sun, and is warmer than the annual average of 52.7°F. Daily temperatures swing about 20.2°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
75.9°F
Avg Low
55.7°F
Precipitation
5.17 in
Daylight
12h 15m
September records in Rising Sun
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (1980) | 45.0°F (1992) | 6.15 in (2021) |
| September 2 | 93.9°F (1980) | 43.0°F (1991) | 2.65 in (2014) |
| September 3 | 97.0°F (1993) | 45.0°F (1999) | 0.86 in (2012) |
| September 4 | 95.0°F (2023) | 39.9°F (1997) | 1.21 in (1984) |
| September 5 | 93.0°F (1985) | 35.1°F (1997) | 0.99 in (1988) |
| September 6 | 95.0°F (1983) | 39.9°F (1988) | 4.67 in (1979) |
| September 7 | 93.0°F (2023) | 36.0°F (2000) | 1.73 in (2011) |
| September 8 | 95.0°F (2023) | 41.0°F (1988) | 1.60 in (2018) |
| September 9 | 93.0°F (2002) | 39.9°F (1986) | 5.90 in (1987) |
| September 10 | 97.0°F (1983) | 39.0°F (1998) | 1.96 in (2015) |
| September 11 | 97.0°F (1983) | 39.9°F (1994) | 3.85 in (2009) |
| September 12 | 95.0°F (1983) | 39.0°F (1993) | 0.85 in (2008) |
| September 13 | 91.0°F (1998) | 42.1°F (1992) | 1.27 in (1987) |
| September 14 | 89.1°F (1981) | 37.9°F (1985) | 1.40 in (2006) |
| September 15 | 89.1°F (1998) | 39.0°F (1985) | 4.44 in (2003) |
| September 16 | 91.0°F (1998) | 39.0°F (1984) | 2.10 in (1999) |
| September 17 | 89.1°F (1994) | 19.9°F (1999) | 6.82 in (1999) |
| September 18 | 87.1°F (1992) | 30.9°F (1990) | 2.76 in (2004) |
| September 19 | 93.9°F (1983) | 39.9°F (1999) | 1.99 in (2016) |
| September 20 | 91.0°F (1983) | 36.0°F (1979) | 1.93 in (1989) |
| September 21 | 90.0°F (1978) | 37.0°F (1991) | 1.54 in (1996) |
| September 22 | 96.1°F (1980) | 33.1°F (1997) | 3.65 in (1979) |
| September 23 | 91.0°F (2019) | 34.0°F (1999) | 4.78 in (2011) |
| September 24 | 89.1°F (2010) | 33.1°F (1993) | 1.32 in (2023) |
| September 25 | 88.0°F (2017) | 35.1°F (1983) | 1.65 in (1991) |
| September 26 | 90.0°F (1986) | 37.0°F (1993) | 1.98 in (1992) |
| September 27 | 93.0°F (1998) | 34.0°F (1993) | 6.21 in (1985) |
| September 28 | 84.0°F (2025) | 36.0°F (1989) | 3.51 in (2004) |
| September 29 | 81.0°F (1986) | 39.0°F (1991) | 1.30 in (1996) |
| September 30 | 90.0°F (1986) | 16.0°F (1992) | 4.60 in (2010) |