May weather in Harrisburg, PA
The average temperature in Harrisburg in May is 61.1°F (50.6°F–71.7°F). Average precipitation: 4.02 inches.
May is a spring month in Harrisburg, and is warmer than the annual average of 51.9°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 14m. For travel, May is a comfortable month to visit.
Avg High
71.7°F
Avg Low
50.6°F
Precipitation
4.02 in
Daylight
14h 14m
May records in Harrisburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (2024) | 34.0°F (2022) | 2.24 in (2023) |
| May 2 | 87.1°F (2010) | 39.9°F (2005) | 0.55 in (1998) |
| May 3 | 91.9°F (2024) | 37.9°F (2005) | 3.53 in (2010) |
| May 4 | 90.0°F (2018) | 36.0°F (2002) | 1.56 in (2021) |
| May 5 | 89.1°F (2001) | 37.0°F (2005) | 0.96 in (2009) |
| May 6 | 89.1°F (2001) | 33.1°F (2003) | 2.53 in (1998) |
| May 7 | 87.1°F (2000) | 39.0°F (2001) | 2.74 in (2022) |
| May 8 | 90.0°F (2000) | 37.0°F (2017) | 0.76 in (2022) |
| May 9 | 91.0°F (2000) | 32.0°F (2020) | 0.97 in (2025) |
| May 10 | 90.0°F (2000) | 33.1°F (2020) | 1.40 in (2024) |
| May 11 | 84.9°F (2000) | 36.0°F (2010) | 0.89 in (2014) |
| May 12 | 86.0°F (2005) | 39.0°F (2010) | 1.40 in (1998) |
| May 13 | 86.0°F (2004) | 35.1°F (2020) | 1.15 in (2019) |
| May 14 | 86.0°F (2004) | 33.1°F (2013) | 1.38 in (2025) |
| May 15 | 84.0°F (2010) | 37.9°F (2007) | 1.52 in (2012) |
| May 16 | 89.1°F (2018) | 37.9°F (2016) | 2.02 in (2014) |
| May 17 | 84.9°F (2015) | 45.0°F (2005) | 1.06 in (2025) |
| May 18 | 90.0°F (2017) | 36.0°F (2023) | 1.16 in (2002) |
| May 19 | 91.0°F (2017) | 36.0°F (2023) | 3.05 in (2011) |
| May 20 | 89.1°F (1998) | 37.0°F (2002) | 0.84 in (2019) |
| May 21 | 86.0°F (2024) | 37.0°F (2002) | 0.46 in (2008) |
| May 22 | 88.0°F (2022) | 37.9°F (2002) | 0.84 in (2025) |
| May 23 | 90.0°F (2022) | 39.0°F (2002) | 0.50 in (2010) |
| May 24 | 89.1°F (2021) | 39.9°F (2015) | 0.80 in (2012) |
| May 25 | 88.0°F (2024) | 39.9°F (2013) | 0.42 in (2009) |
| May 26 | 88.0°F (2007) | 36.0°F (2000) | 0.89 in (2024) |
| May 27 | 90.0°F (2011) | 43.0°F (2013) | 0.85 in (2011) |
| May 28 | 89.1°F (2010) | 50.0°F (2008) | 0.78 in (2024) |
| May 29 | 90.0°F (2012) | 42.1°F (2008) | 1.16 in (2009) |
| May 30 | 91.9°F (2012) | 45.0°F (2021) | 0.83 in (2012) |
| May 31 | 91.0°F (2006) | 46.0°F (2000) | 1.33 in (2025) |