August weather in Harrisburg, PA
The average temperature in Harrisburg in August is 72.7°F (62.4°F–82.9°F). Average precipitation: 4.28 inches.
August is a summer month in Harrisburg, and is warmer than the annual average of 51.9°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 36m. For travel, August is a comfortable month to visit.
Avg High
82.9°F
Avg Low
62.4°F
Precipitation
4.28 in
Daylight
13h 36m
August records in Harrisburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (1999) | 55.9°F (1998) | 1.55 in (2012) |
| August 2 | 95.0°F (2002) | 50.0°F (2004) | 0.64 in (2018) |
| August 3 | 99.0°F (2002) | 54.0°F (1998) | 1.90 in (2017) |
| August 4 | 97.0°F (2002) | 57.9°F (2021) | 1.84 in (2018) |
| August 5 | 96.1°F (2002) | 51.1°F (2004) | 4.76 in (2017) |
| August 6 | 93.0°F (2022) | 55.0°F (2017) | 0.80 in (2012) |
| August 7 | 93.9°F (2001) | 55.0°F (2015) | 3.18 in (2011) |
| August 8 | 95.0°F (2001) | 54.0°F (2004) | 0.57 in (2007) |
| August 9 | 96.1°F (2001) | 51.1°F (2021) | 1.98 in (2024) |
| August 10 | 99.0°F (2001) | 48.0°F (2004) | 2.18 in (2003) |
| August 11 | 95.0°F (2022) | 55.9°F (2002) | 0.73 in (1998) |
| August 12 | 93.9°F (2002) | 52.0°F (2003) | 2.55 in (2021) |
| August 13 | 96.1°F (2002) | 51.1°F (2004) | 2.30 in (2010) |
| August 14 | 97.0°F (2005) | 52.0°F (2004) | 2.25 in (1999) |
| August 15 | 98.1°F (2002) | 52.0°F (2013) | 1.85 in (2012) |
| August 16 | 98.1°F (2002) | 52.0°F (2014) | 0.63 in (2011) |
| August 17 | 91.0°F (2015) | 52.0°F (2014) | 3.17 in (2003) |
| August 18 | 93.9°F (2002) | 51.1°F (2017) | 0.72 in (1998) |
| August 19 | 95.0°F (2002) | 53.1°F (1998) | 0.93 in (2021) |
| August 20 | 93.0°F (2002) | 50.0°F (2008) | 0.45 in (2007) |
| August 21 | 91.0°F (2019) | 48.9°F (2000) | 1.47 in (2007) |
| August 22 | 96.1°F (2017) | 51.1°F (2000) | 1.25 in (2013) |
| August 23 | 93.0°F (2002) | 51.1°F (2024) | 0.47 in (2002) |
| August 24 | 90.0°F (2003) | 44.1°F (2004) | 0.25 in (2002) |
| August 25 | 90.0°F (2003) | 42.1°F (1999) | 0.65 in (2015) |
| August 26 | 93.0°F (2007) | 52.0°F (2025) | 1.31 in (2011) |
| August 27 | 89.1°F (2021) | 51.1°F (2025) | 0.62 in (2012) |
| August 28 | 91.9°F (2020) | 50.0°F (2025) | 2.20 in (2011) |
| August 29 | 91.9°F (2018) | 51.1°F (2025) | 0.70 in (2009) |
| August 30 | 93.0°F (2018) | 46.0°F (2025) | 0.81 in (2008) |
| August 31 | 90.0°F (2022) | 46.0°F (2025) | 0.47 in (2022) |