August weather in Petersburg, MI
The average temperature in Petersburg in August is 70.9°F (60.3°F–81.6°F). Average precipitation: 3.66 inches.
August is a summer month in Petersburg, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 42m. For travel, August is a comfortable month to visit.
Avg High
81.6°F
Avg Low
60.3°F
Precipitation
3.66 in
Daylight
13h 42m
August records in Petersburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 95.0°F (2006) | 53.1°F (2014) | 1.15 in (2018) |
| August 2 | 95.0°F (2006) | 52.0°F (2025) | 0.48 in (2020) |
| August 3 | 93.9°F (2006) | 52.0°F (2025) | 1.20 in (2015) |
| August 4 | 93.9°F (2012) | 54.0°F (2025) | 1.10 in (2006) |
| August 5 | 91.0°F (2012) | 53.1°F (2013) | 0.38 in (2007) |
| August 6 | 93.0°F (2001) | 50.0°F (2004) | 0.33 in (2007) |
| August 7 | 93.9°F (2001) | 51.1°F (2004) | 1.05 in (2007) |
| August 8 | 98.1°F (2001) | 48.0°F (2008) | 1.34 in (2007) |
| August 9 | 91.0°F (2007) | 53.1°F (2017) | 0.92 in (2009) |
| August 10 | 93.9°F (2009) | 50.0°F (2008) | 1.22 in (2007) |
| August 11 | 93.0°F (2016) | 54.0°F (2011) | 1.46 in (2003) |
| August 12 | 93.9°F (2016) | 50.0°F (2004) | 1.83 in (1994) |
| August 13 | 93.0°F (2025) | 51.1°F (2004) | 2.14 in (1994) |
| August 14 | 88.0°F (2003) | 48.0°F (2013) | 0.72 in (2005) |
| August 15 | 87.1°F (2003) | 46.9°F (2014) | 1.35 in (2023) |
| August 16 | 91.0°F (2010) | 48.0°F (2014) | 1.30 in (2016) |
| August 17 | 93.0°F (2009) | 51.1°F (2004) | 0.86 in (2025) |
| August 18 | 86.0°F (2005) | 50.0°F (2007) | 1.70 in (2001) |
| August 19 | 88.0°F (2008) | 51.1°F (2023) | 0.66 in (2019) |
| August 20 | 88.0°F (2005) | 52.0°F (2024) | 1.30 in (2007) |
| August 21 | 91.0°F (2003) | 46.9°F (2024) | 1.00 in (2019) |
| August 22 | 88.0°F (2020) | 46.9°F (2024) | 0.68 in (2001) |
| August 23 | 91.0°F (2020) | 48.9°F (2024) | 0.30 in (2007) |
| August 24 | 93.9°F (2008) | 50.0°F (2024) | 3.75 in (2023) |
| August 25 | 91.9°F (2021) | 46.9°F (2017) | 0.75 in (2007) |
| August 26 | 91.0°F (2012) | 46.9°F (2017) | 0.65 in (2004) |
| August 27 | 93.0°F (2024) | 46.0°F (2025) | 0.58 in (2019) |
| August 28 | 96.1°F (2024) | 46.0°F (2025) | 1.07 in (2016) |
| August 29 | 91.0°F (2021) | 48.0°F (2025) | 2.05 in (2004) |
| August 30 | 93.9°F (2010) | 46.0°F (2025) | 0.48 in (2022) |
| August 31 | 93.9°F (2010) | 46.0°F (2025) | 1.33 in (2013) |