September weather in Coatesville, PA
The average temperature in Coatesville in September is 66.1°F (55.7°F–76.5°F). Average precipitation: 5.17 inches.
September is a fall month in Coatesville, and is warmer than the annual average of 52.8°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 15m. For travel, September is a wet month.
Avg High
76.5°F
Avg Low
55.7°F
Precipitation
5.17 in
Daylight
12h 15m
September records in Coatesville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 88.0°F (1993) | 48.9°F (1986) | 0.68 in (1987) |
| September 2 | 87.1°F (1990) | 44.1°F (1991) | 1.84 in (2006) |
| September 3 | 91.9°F (1993) | 45.0°F (1994) | 0.48 in (1993) |
| September 4 | 90.0°F (1985) | 44.1°F (1987) | 1.60 in (1988) |
| September 5 | 91.9°F (1983) | 43.0°F (1997) | 1.51 in (1999) |
| September 6 | 95.0°F (1983) | 42.1°F (1984) | 1.09 in (1996) |
| September 7 | 90.0°F (1983) | 37.9°F (1984) | 0.68 in (1999) |
| September 8 | 89.1°F (2007) | 39.9°F (1984) | 5.36 in (1987) |
| September 9 | 88.0°F (1991) | 39.9°F (1986) | 0.94 in (1999) |
| September 10 | 95.0°F (1983) | 43.0°F (1986) | 0.53 in (1997) |
| September 11 | 96.1°F (1983) | 42.1°F (1995) | 1.44 in (1997) |
| September 12 | 90.0°F (1983) | 41.0°F (1985) | 0.82 in (1983) |
| September 13 | 84.0°F (1994) | 43.0°F (1985) | 0.94 in (2003) |
| September 14 | 87.1°F (1995) | 43.0°F (1985) | 1.58 in (2006) |
| September 15 | 87.1°F (1993) | 39.0°F (1985) | 2.26 in (2003) |
| September 16 | 91.0°F (1991) | 37.9°F (1983) | 7.85 in (1999) |
| September 17 | 91.0°F (1991) | 39.0°F (1986) | 3.01 in (1995) |
| September 18 | 84.0°F (1992) | 35.1°F (1990) | 3.54 in (2004) |
| September 19 | 91.9°F (1983) | 41.0°F (1984) | 1.55 in (1989) |
| September 20 | 89.1°F (1983) | 37.9°F (1993) | 1.64 in (2001) |
| September 21 | 84.9°F (1989) | 39.9°F (1991) | 1.58 in (1983) |
| September 22 | 82.9°F (2007) | 36.0°F (1991) | 1.63 in (1996) |
| September 23 | 84.9°F (1988) | 35.1°F (1983) | 1.80 in (2003) |
| September 24 | 84.0°F (1984) | 37.0°F (1998) | 1.91 in (2001) |
| September 25 | 86.0°F (2007) | 34.0°F (1983) | 1.93 in (1991) |
| September 26 | 90.0°F (2007) | 37.9°F (1983) | 1.57 in (1985) |
| September 27 | 91.0°F (1998) | 39.0°F (1984) | 4.02 in (1985) |
| September 28 | 81.0°F (1987) | 34.0°F (1989) | 3.81 in (2004) |
| September 29 | 79.0°F (1987) | 37.9°F (2000) | 0.22 in (1997) |
| September 30 | 88.0°F (1986) | 34.0°F (2000) | 1.29 in (1999) |