September weather in Baltimore, MD
The average temperature in Baltimore in September is 72.5°F (64.5°F–80.4°F). Average precipitation: 4.49 inches.
September is a fall month in Baltimore, and is warmer than the annual average of 59.1°F. Daily temperatures swing about 15.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
64.5°F
Precipitation
4.49 in
Daylight
12h 15m
September records in Baltimore
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (2010) | 61.0°F (2002) | 1.44 in (2006) |
| September 2 | 95.0°F (2013) | 59.0°F (2017) | 1.31 in (2012) |
| September 3 | 98.1°F (2023) | 60.1°F (2024) | 1.20 in (2000) |
| September 4 | 100.0°F (2023) | 59.0°F (2024) | 0.51 in (1999) |
| September 5 | 100.0°F (2023) | 60.1°F (2000) | 2.04 in (2006) |
| September 6 | 99.0°F (2023) | 55.9°F (2000) | 2.20 in (2022) |
| September 7 | 98.1°F (2023) | 57.9°F (2000) | 3.17 in (2011) |
| September 8 | 95.0°F (2016) | 55.9°F (2024) | 1.23 in (2011) |
| September 9 | 93.9°F (2015) | 55.0°F (1998) | 1.90 in (2018) |
| September 10 | 95.0°F (2013) | 57.0°F (1998) | 1.25 in (2015) |
| September 11 | 98.1°F (2013) | 59.0°F (2009) | 1.66 in (2009) |
| September 12 | 95.0°F (2019) | 61.0°F (2002) | 1.83 in (2023) |
| September 13 | 91.9°F (2005) | 59.0°F (2015) | 0.48 in (2003) |
| September 14 | 91.9°F (2011) | 55.9°F (2014) | 0.64 in (2004) |
| September 15 | 91.9°F (2005) | 53.1°F (2001) | 0.75 in (1999) |
| September 16 | 91.9°F (1998) | 53.1°F (2011) | 4.44 in (1999) |
| September 17 | 90.0°F (2005) | 52.0°F (2000) | 1.37 in (2018) |
| September 18 | 87.1°F (2016) | 55.0°F (2013) | 2.99 in (2018) |
| September 19 | 89.1°F (2005) | 54.0°F (2004) | 1.78 in (2016) |
| September 20 | 89.1°F (2005) | 54.0°F (2004) | 0.94 in (2001) |
| September 21 | 89.1°F (2002) | 52.0°F (1999) | 1.29 in (2013) |
| September 22 | 93.0°F (2010) | 50.0°F (1999) | 1.12 in (2024) |
| September 23 | 95.0°F (2019) | 50.0°F (1999) | 3.02 in (2011) |
| September 24 | 97.0°F (2010) | 54.0°F (1998) | 0.85 in (2023) |
| September 25 | 91.9°F (2010) | 48.0°F (2000) | 2.03 in (2000) |
| September 26 | 93.9°F (2007) | 48.0°F (2001) | 1.74 in (2002) |
| September 27 | 95.0°F (1998) | 48.9°F (2000) | 3.14 in (2008) |
| September 28 | 89.1°F (2019) | 51.1°F (2001) | 2.09 in (2004) |
| September 29 | 87.1°F (2019) | 48.0°F (2000) | 1.97 in (2015) |
| September 30 | 82.0°F (1998) | 48.9°F (2003) | 5.72 in (2010) |