September weather in St. John, IN
The average temperature in St. John in September is °F (°F–°F). Average precipitation: 3.48 inches.
September is a fall month in St. John, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.48 in
Daylight
12h 16m
September records in St. John
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 0.79 in (2013) |
| September 2 | — | — | 1.83 in (1993) |
| September 3 | — | — | 1.61 in (2011) |
| September 4 | — | — | 2.93 in (2008) |
| September 5 | — | — | 0.60 in (1993) |
| September 6 | — | — | 0.64 in (2014) |
| September 7 | — | — | 1.20 in (1998) |
| September 8 | — | — | 0.66 in (2020) |
| September 9 | — | — | 3.56 in (1992) |
| September 10 | — | — | 3.56 in (1992) |
| September 11 | — | — | 1.45 in (2000) |
| September 12 | — | — | 1.26 in (1996) |
| September 13 | — | — | 4.18 in (2008) |
| September 14 | — | — | 4.73 in (2008) |
| September 15 | — | — | 0.63 in (2019) |
| September 16 | — | — | 0.86 in (2005) |
| September 17 | — | — | 0.62 in (1997) |
| September 18 | — | — | 1.56 in (2015) |
| September 19 | — | — | 1.90 in (2013) |
| September 20 | — | — | 0.90 in (1992) |
| September 21 | — | — | 0.46 in (2021) |
| September 22 | — | — | 0.59 in (2010) |
| September 23 | — | — | 1.03 in (2024) |
| September 24 | — | — | 0.76 in (2001) |
| September 25 | — | — | 0.80 in (1993) |
| September 26 | — | — | 2.10 in (2005) |
| September 27 | — | — | 0.83 in (1992) |
| September 28 | — | — | 5.44 in (2019) |
| September 29 | — | — | 0.87 in (2016) |
| September 30 | — | — | 0.37 in (1998) |