August weather in Greendale, WI
The average temperature in Greendale in August is 70.1°F (59.2°F–81.1°F). Average precipitation: 3.79 inches.
August is a summer month in Greendale, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
81.1°F
Avg Low
59.2°F
Precipitation
3.79 in
Daylight
13h 46m
August records in Greendale
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (2006) | 50.0°F (2019) | 0.27 in (2013) |
| August 2 | 97.0°F (2006) | 46.0°F (2021) | 2.06 in (2024) |
| August 3 | 93.0°F (2006) | 46.9°F (2021) | 4.30 in (2020) |
| August 4 | 93.9°F (2005) | 48.9°F (2020) | 0.73 in (2008) |
| August 5 | 93.0°F (2018) | 46.0°F (2020) | 1.97 in (2007) |
| August 6 | 91.0°F (2018) | 48.9°F (2012) | 1.09 in (2024) |
| August 7 | 93.0°F (2022) | 51.1°F (2012) | 1.29 in (2007) |
| August 8 | 91.0°F (2012) | 46.9°F (2020) | 1.65 in (2021) |
| August 9 | 91.9°F (2005) | 51.1°F (2019) | 1.15 in (2010) |
| August 10 | 97.0°F (2005) | 48.0°F (2008) | 6.45 in (2025) |
| August 11 | 91.0°F (2021) | 50.0°F (2012) | 1.13 in (2014) |
| August 12 | 90.0°F (2010) | 46.0°F (2011) | 1.79 in (2013) |
| August 13 | 91.0°F (2010) | 51.1°F (2017) | 0.55 in (2025) |
| August 14 | 90.0°F (2010) | 46.9°F (2021) | 0.95 in (2008) |
| August 15 | 91.9°F (2015) | 46.0°F (2021) | 3.10 in (2023) |
| August 16 | 88.0°F (2009) | 48.9°F (2021) | 0.90 in (2024) |
| August 17 | 90.0°F (2015) | 48.9°F (2021) | 0.47 in (2012) |
| August 18 | 90.0°F (2015) | 39.9°F (2012) | 0.30 in (2006) |
| August 19 | 87.1°F (2008) | 46.0°F (2012) | 2.05 in (2007) |
| August 20 | 89.1°F (2011) | 48.0°F (2012) | 1.50 in (2007) |
| August 21 | 91.9°F (2010) | 50.0°F (2024) | 1.62 in (2018) |
| August 22 | 88.0°F (2013) | 46.9°F (2012) | 0.44 in (2007) |
| August 23 | 88.0°F (2007) | 46.0°F (2005) | 1.96 in (2013) |
| August 24 | 99.0°F (2023) | 48.0°F (2019) | 0.60 in (2006) |
| August 25 | 97.0°F (2023) | 45.0°F (2017) | 1.23 in (2022) |
| August 26 | 91.9°F (2012) | 48.0°F (2008) | 1.10 in (2009) |
| August 27 | 91.0°F (2020) | 48.0°F (2015) | 0.76 in (2018) |
| August 28 | 95.0°F (2013) | 48.9°F (2011) | 0.91 in (2018) |
| August 29 | 93.9°F (2013) | 46.0°F (2011) | 0.90 in (2015) |
| August 30 | 91.9°F (2010) | 46.0°F (2020) | 0.11 in (2015) |
| August 31 | 91.0°F (2012) | 39.9°F (2009) | 0.38 in (2016) |