Harrisburg, PA
Climate overview — based on NOAA 1991-2020 normals from HARRISBURG 1 NE, PA US.
Year-round temperatures (°F)
Climate summary
Harrisburg has an annual average temperature of 51.9°F with about 45.2 inches of precipitation per year and 23.9 inches of snow. The warmest month is July (average high 85.2°F), and the coldest is January (average low 21.8°F). July is typically the wettest month (4.81 in) and February the driest (2.77 in). Snow typically falls from November through April.
Best time to visit Harrisburg
Full guide →Climate change signal
All-time records →153 of 366 (41.8%) of Harrisburg's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 20 | |
| 2000s | 130 | |
| 2010s | 120 | |
| 2020s | 96 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 36.6°F | 21.8°F | 29.2°F | 2.87 in | 6.4 in | 10 |
| February | 39.5°F | 22.5°F | 31.0°F | 2.77 in | 7.7 in | 9 |
| March | 48.1°F | 30.0°F | 39.1°F | 3.93 in | 4.5 in | 9 |
| April | 61.0°F | 40.2°F | 50.6°F | 3.91 in | 0.4 in | 12 |
| May | 71.7°F | 50.6°F | 61.1°F | 4.02 in | — | 13 |
| June | 80.6°F | 60.3°F | 70.5°F | 4.00 in | — | 12 |
| July | 85.2°F | 64.7°F | 74.9°F | 4.81 in | — | 11 |
| August | 82.9°F | 62.4°F | 72.7°F | 4.28 in | — | 11 |
| September | 75.1°F | 54.8°F | 64.9°F | 4.58 in | — | 9 |
| October | 63.1°F | 43.1°F | 53.1°F | 3.77 in | — | 11 |
| November | 51.1°F | 33.8°F | 42.4°F | 2.87 in | 0.7 in | 9 |
| December | 40.8°F | 26.7°F | 33.8°F | 3.42 in | 4.2 in | 10 |
Climate twins of Harrisburg
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).