August weather in St. Jacob, IL
The average temperature in St. Jacob in August is °F (°F–°F). Average precipitation: 3.81 inches.
August is a summer month in St. Jacob, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 13h 31m.
Avg High
°F
Avg Low
°F
Precipitation
3.81 in
Daylight
13h 31m
August records in St. Jacob
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | — | — | 0.78 in (2020) |
| August 2 | — | — | 0.40 in (1994) |
| August 3 | — | — | 1.02 in (1990) |
| August 4 | — | — | 1.71 in (2003) |
| August 5 | — | — | 1.20 in (1998) |
| August 6 | — | — | 4.02 in (2015) |
| August 7 | — | — | 2.05 in (1995) |
| August 8 | — | — | 1.96 in (2014) |
| August 9 | — | — | 1.82 in (2021) |
| August 10 | — | — | 1.48 in (1980) |
| August 11 | — | — | 1.21 in (2020) |
| August 12 | — | — | 2.57 in (1990) |
| August 13 | — | — | 2.15 in (2019) |
| August 14 | — | — | 1.99 in (2010) |
| August 15 | — | — | 2.71 in (2016) |
| August 16 | — | — | 1.89 in (2005) |
| August 17 | — | — | 2.92 in (2014) |
| August 18 | — | — | 1.12 in (1996) |
| August 19 | — | — | 1.21 in (2015) |
| August 20 | — | — | 1.22 in (2002) |
| August 21 | — | — | 1.52 in (2010) |
| August 22 | — | — | 1.19 in (1984) |
| August 23 | — | — | 2.30 in (1988) |
| August 24 | — | — | 1.07 in (1992) |
| August 25 | — | — | 2.07 in (2001) |
| August 26 | — | — | 1.70 in (2005) |
| August 27 | — | — | 1.56 in (2016) |
| August 28 | — | — | 0.72 in (1978) |
| August 29 | — | — | 2.10 in (2004) |
| August 30 | — | — | 0.82 in (1978) |
| August 31 | — | — | 1.19 in (2021) |