September weather in South Bend, WA
The average temperature in South Bend in September is 57.9°F (45.6°F–70.2°F). Average precipitation: 3.11 inches.
September is a fall month in South Bend, and is warmer than the annual average of 49.8°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
70.2°F
Avg Low
45.6°F
Precipitation
3.11 in
Daylight
12h 19m
September records in South Bend
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1987) | 39.0°F (1999) | 0.66 in (1981) |
| September 2 | 91.9°F (1988) | 37.0°F (1984) | 0.85 in (1980) |
| September 3 | 99.0°F (1988) | 37.0°F (2021) | 0.40 in (1996) |
| September 4 | 95.0°F (2017) | 37.0°F (2021) | 0.24 in (2013) |
| September 5 | 87.1°F (1990) | 39.0°F (2005) | 0.93 in (1984) |
| September 6 | 95.0°F (2024) | 37.9°F (1992) | 1.64 in (1984) |
| September 7 | 90.0°F (2014) | 34.0°F (1992) | 0.81 in (1995) |
| September 8 | 87.1°F (1981) | 37.9°F (1988) | 0.88 in (1982) |
| September 9 | 87.1°F (1989) | 37.9°F (1988) | 0.74 in (1983) |
| September 10 | 91.9°F (2020) | 37.0°F (2012) | 1.50 in (2004) |
| September 11 | 91.0°F (2020) | 33.1°F (1988) | 1.09 in (2024) |
| September 12 | 98.1°F (2015) | 34.0°F (1986) | 0.81 in (2018) |
| September 13 | 86.0°F (1989) | 34.0°F (1986) | 1.49 in (2018) |
| September 14 | 91.0°F (1988) | 35.1°F (1982) | 1.01 in (2004) |
| September 15 | 84.9°F (1981) | 36.0°F (1982) | 1.15 in (2019) |
| September 16 | 89.1°F (1981) | 35.1°F (1992) | 0.90 in (1997) |
| September 17 | 89.1°F (2025) | 34.0°F (1992) | 3.44 in (1997) |
| September 18 | 84.9°F (1991) | 35.1°F (1983) | 2.14 in (1997) |
| September 19 | 87.1°F (1991) | 32.0°F (1983) | 0.63 in (1988) |
| September 20 | 82.9°F (2014) | 35.1°F (2002) | 0.76 in (1980) |
| September 21 | 82.9°F (1987) | 34.0°F (2005) | 0.76 in (2025) |
| September 22 | 89.1°F (2009) | 28.9°F (2000) | 1.43 in (2013) |
| September 23 | 90.0°F (1989) | 30.0°F (2000) | 1.44 in (2014) |
| September 24 | 82.0°F (1997) | 30.0°F (2000) | 1.82 in (2020) |
| September 25 | 84.9°F (1991) | 33.1°F (1996) | 1.20 in (2020) |
| September 26 | 89.1°F (1991) | 34.0°F (1996) | 1.52 in (2011) |
| September 27 | 87.1°F (2003) | 30.0°F (1983) | 1.43 in (2013) |
| September 28 | 82.9°F (1994) | 30.9°F (1983) | 2.70 in (2013) |
| September 29 | 82.0°F (1989) | 28.9°F (1983) | 2.32 in (2013) |
| September 30 | 84.9°F (1987) | 28.9°F (1983) | 1.72 in (2013) |