August weather in Williamsport, PA
The average temperature in Williamsport in August is 72.9°F (62.2°F–83.7°F). Average precipitation: 3.80 inches.
August is a summer month in Williamsport, and is warmer than the annual average of 51.8°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 13h 39m. For travel, August is a comfortable month to visit.
Avg High
83.7°F
Avg Low
62.2°F
Precipitation
3.80 in
Daylight
13h 39m
August records in Williamsport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (2006) | 57.0°F (2021) | 2.28 in (2018) |
| August 2 | 100.0°F (2007) | 52.0°F (2025) | 0.60 in (2024) |
| August 3 | 98.1°F (2006) | 52.0°F (2025) | 1.30 in (2024) |
| August 4 | 98.1°F (2005) | 54.0°F (2025) | 1.42 in (2023) |
| August 5 | 93.0°F (2001) | 54.0°F (2000) | 0.58 in (2014) |
| August 6 | 97.0°F (2001) | 53.1°F (2004) | 1.69 in (2011) |
| August 7 | 99.0°F (2001) | 53.1°F (2004) | 0.89 in (2020) |
| August 8 | 99.0°F (2001) | 53.1°F (2002) | 1.53 in (2007) |
| August 9 | 99.0°F (2001) | 53.1°F (2002) | 5.14 in (2024) |
| August 10 | 93.0°F (2002) | 53.1°F (2002) | 1.24 in (1998) |
| August 11 | 93.9°F (2002) | 54.0°F (2019) | 2.00 in (2003) |
| August 12 | 97.0°F (2002) | 48.0°F (2006) | 2.27 in (2014) |
| August 13 | 100.0°F (2005) | 46.0°F (2006) | 2.03 in (2018) |
| August 14 | 98.1°F (2002) | 51.1°F (2006) | 1.16 in (2023) |
| August 15 | 91.9°F (2002) | 50.0°F (2013) | 0.72 in (2010) |
| August 16 | 93.0°F (2002) | 53.1°F (2013) | 1.10 in (2003) |
| August 17 | 95.0°F (2002) | 53.1°F (2008) | 1.63 in (2023) |
| August 18 | 93.9°F (2002) | 53.1°F (2007) | 1.86 in (2021) |
| August 19 | 90.0°F (2002) | 53.1°F (2012) | 0.83 in (2001) |
| August 20 | 91.9°F (2016) | 48.9°F (2008) | 2.43 in (2015) |
| August 21 | 91.9°F (2005) | 44.1°F (2000) | 1.85 in (2007) |
| August 22 | 93.9°F (2020) | 50.0°F (2000) | 1.22 in (2010) |
| August 23 | 89.1°F (2020) | 51.1°F (1999) | 0.35 in (2002) |
| August 24 | 91.9°F (2020) | 51.1°F (2003) | 0.79 in (2025) |
| August 25 | 93.9°F (2007) | 44.1°F (2005) | 0.75 in (2011) |
| August 26 | 91.9°F (2016) | 50.0°F (2008) | 0.63 in (2012) |
| August 27 | 95.0°F (2020) | 46.0°F (2025) | 1.18 in (2006) |
| August 28 | 93.9°F (2018) | 48.9°F (2025) | 0.95 in (2009) |
| August 29 | 93.9°F (2018) | 48.9°F (2011) | 3.35 in (2006) |
| August 30 | 93.0°F (2010) | 44.1°F (2025) | 1.65 in (2023) |
| August 31 | 93.0°F (2010) | 46.0°F (2025) | 2.03 in (2005) |