Harrisburg, PA Climate in May

Temperature for May

In Harrisburg, PA during May the average high temperature is 74.0°F. The hottest day on record was May 19, 1996 when the temperature hit 97.0°F.

Harrisburg, PA daily average and extreme temperature range for May

Low Temperature

During May the overnight temperature drops to an average of 52.9°F, with the lowest temperature of 34.9°F being recorded on May 14, 1996. In May it has never frozen overnight.

Precipitation for May

In May the average monthly rainfall in Harrisburg, PA is 1.92 inches with rain usually falling on between 4 and 5 days. 1992 was the driest May with only 0.00 inches of rain falling, and 2012 was the wettest May with 6.66 inches of rain. The wettest single day in May was 3 May 2010 when 3.05 inches of rain fell.

There are thunderstorms on between 1 and 2 days in May.