Harrisburg, PA Weather & Climate Normals
Harrisburg's real weather, in one number
Harrisburg, PA scores 47/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Harrisburg's hottest and coldest months
Harrisburg's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 29°F, a 45.8°F swing across the year, one of the widest gaps in this dataset.
Harrisburg's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 37°F | 22°F | 2.87in | 6.4in |
| Feb | 40°F | 23°F | 2.77in | 7.7in |
| Mar | 48°F | 30°F | 3.93in | 4.5in |
| Apr | 61°F | 40°F | 3.91in | 0.4in |
| May | 72°F | 51°F | 4.02in | 0in |
| Jun | 81°F | 60°F | 4in | 0in |
| Jul | 85°F | 65°F | 4.81in | 0in |
| Aug | 83°F | 62°F | 4.28in | 0in |
| Sep | 75°F | 55°F | 4.58in | 0in |
| Oct | 63°F | 43°F | 3.77in | 0in |
| Nov | 51°F | 34°F | 2.87in | 0.7in |
| Dec | 41°F | 27°F | 3.42in | 4.2in |
May, Jun, Jul, Aug, and Sep are the best time to see Harrisburg at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Harrisburg
Harrisburg averages 45.23in of precipitation a year across roughly 125 days with measurable rain or snow, and 23.9in of snow a year.
Where Harrisburg ranks
Harrisburg ranks 2571 of 4876 US cities in this dataset for comfort score, and 73 of 193 within PA. About 50,649 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Harrisburg 1 Ne, PA US, 0.9 miles from Harrisburg, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station