Chambersburg, PA Weather & Climate Normals
Chambersburg's real weather, in one number
Chambersburg, PA scores 46/100 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.
Chambersburg's hottest and coldest months
Chambersburg's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 30°F, a 44.6°F swing across the year, a middling gap by national standards.
Chambersburg's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 37°F | 23°F | 3.21in | 10in |
| Feb | 41°F | 25°F | 2.61in | 8in |
| Mar | 50°F | 32°F | 3.61in | 6in |
| Apr | 63°F | 42°F | 3.98in | 0.3in |
| May | 73°F | 52°F | 4.13in | 0in |
| Jun | 81°F | 61°F | 4.1in | 0in |
| Jul | 85°F | 65°F | 3.83in | 0in |
| Aug | 83°F | 63°F | 3.82in | 0in |
| Sep | 76°F | 56°F | 4.14in | 0in |
| Oct | 64°F | 45°F | 3.53in | 0in |
| Nov | 52°F | 35°F | 3.12in | 1in |
| Dec | 41°F | 27°F | 3.45in | 5.5in |
May, Jun, Jul, Aug, and Sep are the best time to see Chambersburg at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Chambersburg
Chambersburg averages 43.53in of precipitation a year across roughly 117 days with measurable rain or snow, and 30.8in of snow a year.
Where Chambersburg ranks
Chambersburg ranks 2985 of 4876 US cities in this dataset for comfort score, and 97 of 193 within PA. About 23,041 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Chambersburg 1 Ese, PA US, 0.9 miles from Chambersburg, 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