May weather in Williamsport, PA
The average temperature in Williamsport in May is 61.6°F (49.7°F–73.5°F). Average precipitation: 3.83 inches.
May is a spring month in Williamsport, and is warmer than the annual average of 51.8°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 14h 19m. For travel, May is a comfortable month to visit.
Avg High
73.5°F
Avg Low
49.7°F
Precipitation
3.83 in
Daylight
14h 19m
May records in Williamsport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2010) | 32.0°F (2002) | 0.98 in (2017) |
| May 2 | 91.0°F (2001) | 34.0°F (2005) | 0.90 in (2004) |
| May 3 | 93.0°F (2001) | 28.9°F (2005) | 0.98 in (2011) |
| May 4 | 91.9°F (2001) | 30.0°F (2005) | 0.94 in (2025) |
| May 5 | 88.0°F (2000) | 30.0°F (2005) | 1.05 in (2017) |
| May 6 | 88.0°F (2000) | 35.1°F (2004) | 1.53 in (2025) |
| May 7 | 91.9°F (2000) | 33.1°F (2006) | 0.83 in (2022) |
| May 8 | 91.0°F (2015) | 34.0°F (2020) | 1.03 in (1999) |
| May 9 | 93.9°F (2000) | 30.0°F (2020) | 0.87 in (2021) |
| May 10 | 88.0°F (2000) | 30.9°F (2020) | 0.93 in (2024) |
| May 11 | 90.0°F (2005) | 32.0°F (2010) | 0.93 in (1998) |
| May 12 | 88.0°F (2023) | 35.1°F (2021) | 1.96 in (2000) |
| May 13 | 91.0°F (2004) | 30.9°F (2020) | 1.27 in (2002) |
| May 14 | 86.0°F (2010) | 32.0°F (2007) | 0.78 in (2009) |
| May 15 | 91.0°F (2007) | 37.9°F (2003) | 0.84 in (2024) |
| May 16 | 86.0°F (2013) | 35.1°F (2016) | 2.67 in (2014) |
| May 17 | 93.0°F (2017) | 30.9°F (2012) | 0.43 in (2011) |
| May 18 | 93.9°F (2017) | 32.0°F (2023) | 0.93 in (2002) |
| May 19 | 90.0°F (2017) | 32.0°F (2009) | 0.92 in (2011) |
| May 20 | 90.0°F (2021) | 34.0°F (2008) | 0.89 in (2011) |
| May 21 | 93.9°F (2022) | 33.1°F (2002) | 0.72 in (2025) |
| May 22 | 93.9°F (2013) | 32.0°F (2002) | 1.10 in (2018) |
| May 23 | 91.0°F (2021) | 36.0°F (2002) | 0.60 in (1999) |
| May 24 | 89.1°F (2007) | 39.9°F (2006) | 0.76 in (2003) |
| May 25 | 91.0°F (2016) | 41.0°F (2008) | 0.67 in (2017) |
| May 26 | 93.0°F (2010) | 39.9°F (2023) | 1.62 in (2001) |
| May 27 | 91.9°F (2010) | 37.9°F (2013) | 1.55 in (2011) |
| May 28 | 93.0°F (2016) | 45.0°F (1999) | 1.00 in (2021) |
| May 29 | 97.0°F (2006) | 37.9°F (2008) | 0.53 in (1998) |
| May 30 | 98.1°F (2006) | 41.0°F (2004) | 1.10 in (2006) |
| May 31 | 96.1°F (2011) | 42.1°F (2001) | 0.90 in (2003) |