Climate of Pennsylvania, USA
Area-weighted average across Pennsylvania. For where people actually live and travel, see the cities below.
Pennsylvania, a subdivision of United States of America, has a strongly continental climate on average. Area-weighted monthly temperatures across the whole territory range from -3.8°C / 25.2°F in January to 21.2°C / 70.2°F in July, with rainfall from 66 mm / 2.6 in to 110 mm / 4.3 in depending on the season (1068 mm / 42 in total across the year). See the 3 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -3.8°C25.2°F | 70 mm2.8″ | Snowy |
| February | -2.6°C27.3°F | 66 mm2.6″ | Snowy |
| March | 2.3°C36.1°F | 84 mm3.3″ | — |
| April | 8.2°C46.8°F | 88 mm3.5″ | — |
| May | 14.1°C57.4°F | 103 mm4.1″ | — |
| June | 18.7°C65.7°F | 110 mm4.3″ | — |
| July | 21.2°C70.2°F | 104 mm4.1″ | — |
| August | 20.5°C68.9°F | 95 mm3.7″ | — |
| September | 16.7°C62.1°F | 96 mm3.8″ | — |
| October | 10.5°C50.9°F | 80 mm3.1″ | — |
| November | 4.9°C40.8°F | 91 mm3.6″ | — |
| December | -0.7°C30.7°F | 81 mm3.2″ | Snowy |
Frequently asked questions
What is the best time to visit Pennsylvania?
Pennsylvania, United States of America does not have a clear sunny-and-dry window by our cutoffs. The warmest month is July at 21.2°C / 70.2°F, and the driest is February at 66 mm / 2.6 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Pennsylvania?
Pennsylvania, United States of America has area-weighted monthly average temperatures ranging from -3.8°C / 25.2°F in January to 21.2°C / 70.2°F in July. Annual rainfall averages about 1068 mm / 42 in, with the wettest month being June (110 mm / 4.3 in) and the driest February (66 mm / 2.6 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Pennsylvania?
The hottest month in Pennsylvania is July, with an area-wide average temperature of 21.2°C / 70.2°F.
What is the coldest month in Pennsylvania?
The coldest month in Pennsylvania is January, with an area-wide average temperature of -3.8°C / 25.2°F.
When does it rain most in Pennsylvania?
The wettest month in Pennsylvania is June, averaging about 110 mm / 4.3 in of rainfall. The driest is February with about 66 mm / 2.6 in.