August weather in St. John, IN
The average temperature in St. John in August is °F (°F–°F). Average precipitation: 5.22 inches.
August is a summer month in St. John, and is cooler than the annual average of 0°F. Expect about 9 days with precipitation. Daylight averages about 13h 40m.
Avg High
°F
Avg Low
°F
Precipitation
5.22 in
Daylight
13h 40m
August records in St. John
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | — | — | 1.34 in (2008) |
| August 2 | — | — | 0.70 in (2020) |
| August 3 | — | — | 3.69 in (1998) |
| August 4 | — | — | 1.85 in (2008) |
| August 5 | — | — | 4.00 in (2008) |
| August 6 | — | — | 1.07 in (2023) |
| August 7 | — | — | 1.37 in (2007) |
| August 8 | — | — | 2.00 in (2003) |
| August 9 | — | — | 0.57 in (2007) |
| August 10 | — | — | 0.90 in (1999) |
| August 11 | — | — | 0.92 in (2014) |
| August 12 | — | — | 1.58 in (1997) |
| August 13 | — | — | 1.18 in (2013) |
| August 14 | — | — | 0.67 in (2012) |
| August 15 | — | — | 0.59 in (2023) |
| August 16 | — | — | 2.50 in (2016) |
| August 17 | — | — | 2.33 in (1997) |
| August 18 | — | — | 1.67 in (2015) |
| August 19 | — | — | 2.25 in (2006) |
| August 20 | — | — | 1.70 in (2005) |
| August 21 | — | — | 3.40 in (2007) |
| August 22 | — | — | 2.75 in (2014) |
| August 23 | — | — | 0.62 in (1993) |
| August 24 | — | — | 2.65 in (2014) |
| August 25 | — | — | 3.93 in (2007) |
| August 26 | — | — | 3.12 in (2021) |
| August 27 | — | — | 1.47 in (2016) |
| August 28 | — | — | 1.61 in (2009) |
| August 29 | — | — | 2.13 in (1993) |
| August 30 | — | — | 0.47 in (2006) |
| August 31 | — | — | 4.00 in (2001) |