September weather in Westminster, MD
The average temperature in Westminster in September is 65.6°F (54.4°F–76.9°F). Average precipitation: 4.83 inches.
September is a fall month in Westminster, and is warmer than the annual average of 52.6°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
76.9°F
Avg Low
54.4°F
Precipitation
4.83 in
Daylight
12h 15m
September records in Westminster
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2010) | 46.0°F (2009) | 0.68 in (2021) |
| September 2 | 95.0°F (2010) | 46.0°F (2001) | 6.26 in (2021) |
| September 3 | 93.9°F (2010) | 41.0°F (1995) | 1.48 in (1993) |
| September 4 | 91.9°F (2018) | 46.9°F (1995) | 1.73 in (2003) |
| September 5 | 91.9°F (2018) | 39.9°F (1997) | 1.26 in (2011) |
| September 6 | 91.9°F (2018) | 41.0°F (2000) | 1.13 in (2017) |
| September 7 | 93.0°F (1998) | 44.1°F (2000) | 4.18 in (2008) |
| September 8 | 91.9°F (2016) | 46.9°F (2000) | 3.34 in (2011) |
| September 9 | 91.9°F (2015) | 44.1°F (2017) | 1.75 in (1995) |
| September 10 | 91.0°F (2007) | 43.0°F (1998) | 2.20 in (2018) |
| September 11 | 93.0°F (2016) | 37.0°F (1995) | 1.53 in (2015) |
| September 12 | 93.0°F (2013) | 42.1°F (1995) | 1.44 in (2009) |
| September 13 | 91.0°F (1998) | 48.0°F (2002) | 0.99 in (2015) |
| September 14 | 90.0°F (1998) | 41.0°F (2014) | 1.30 in (2006) |
| September 15 | 90.0°F (1998) | 37.0°F (2001) | 1.88 in (1993) |
| September 16 | 90.0°F (1998) | 37.9°F (2001) | 1.89 in (1999) |
| September 17 | 90.0°F (1998) | 37.0°F (2007) | 1.62 in (1999) |
| September 18 | 86.0°F (2005) | 39.0°F (2013) | 3.31 in (2004) |
| September 19 | 86.0°F (2021) | 37.0°F (2020) | 3.24 in (2012) |
| September 20 | 84.9°F (2005) | 32.0°F (2020) | 1.76 in (2000) |
| September 21 | 84.0°F (1997) | 30.9°F (2020) | 2.53 in (2001) |
| September 22 | 84.9°F (2007) | 32.0°F (2020) | 1.08 in (1994) |
| September 23 | 90.0°F (2010) | 33.1°F (2020) | 3.11 in (2003) |
| September 24 | 89.1°F (2005) | 33.1°F (1995) | 0.75 in (2011) |
| September 25 | 91.9°F (2010) | 36.0°F (1995) | 1.85 in (2001) |
| September 26 | 90.0°F (2007) | 39.9°F (2001) | 1.15 in (2000) |
| September 27 | 91.0°F (2007) | 37.9°F (1997) | 1.93 in (2002) |
| September 28 | 90.0°F (1998) | 41.0°F (1997) | 1.74 in (2008) |
| September 29 | 84.9°F (2020) | 35.1°F (2000) | 2.88 in (2004) |
| September 30 | 77.0°F (2015) | 36.0°F (2000) | 2.14 in (2015) |