August weather in Eureka, IL
The average temperature in Eureka in August is °F (°F–°F). Average precipitation: 3.65 inches.
August is a summer month in Eureka, and is cooler than the annual average of 0°F. Expect about 9 days with precipitation. Daylight averages about 13h 38m.
Avg High
°F
Avg Low
°F
Precipitation
3.65 in
Daylight
13h 38m
August records in Eureka
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | — | — | 1.66 in (2014) |
| August 2 | — | — | 1.37 in (2017) |
| August 3 | — | — | 0.72 in (2013) |
| August 4 | — | — | 0.42 in (2009) |
| August 5 | — | — | 0.51 in (2012) |
| August 6 | — | — | 0.35 in (2003) |
| August 7 | — | — | 0.20 in (2018) |
| August 8 | — | — | 0.52 in (2009) |
| August 9 | — | — | 1.14 in (2007) |
| August 10 | — | — | 0.46 in (2006) |
| August 11 | — | — | 0.52 in (2017) |
| August 12 | — | — | 1.16 in (2005) |
| August 13 | — | — | 2.32 in (2016) |
| August 14 | — | — | 0.07 in (2005) |
| August 15 | — | — | 0.62 in (2001) |
| August 16 | — | — | 0.27 in (2016) |
| August 17 | — | — | 1.13 in (2012) |
| August 18 | — | — | 1.08 in (2002) |
| August 19 | — | — | 1.43 in (2007) |
| August 20 | — | — | 0.82 in (2009) |
| August 21 | — | — | 2.25 in (2018) |
| August 22 | — | — | 1.35 in (2002) |
| August 23 | — | — | 1.25 in (2008) |
| August 24 | — | — | 1.74 in (2011) |
| August 25 | — | — | 1.95 in (2004) |
| August 26 | — | — | 0.91 in (2019) |
| August 27 | — | — | 1.12 in (2006) |
| August 28 | — | — | 1.67 in (2006) |
| August 29 | — | — | 3.26 in (2018) |
| August 30 | — | — | 1.83 in (2016) |
| August 31 | — | — | 2.20 in (2003) |