WeatherWX.com
Chambersburg Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 33°F Lo 20°F | Hi 37°F Lo 21°F | Hi 47°F Lo 30°F | Hi 59°F Lo 40°F | Hi 70°F Lo 51°F | Hi 78°F Lo 59°F | Hi 82°F Lo 63°F | Hi 81°F Lo 62°F | Hi 75°F Lo 56°F | Hi 62°F Lo 45°F | Hi 49°F Lo 34°F | Hi 39°F Lo 27°F |
| 9 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 8 mph | 8 mph |
| 3.3 in | 3.4 in | 4.1 in | 5 in | 4.6 in | 5.4 in | 4.9 in | 3.9 in | 4 in | 4.1 in | 3.4 in | 3.8 in |
| 86% | 85% | 78% | 77% | 78% | 78% | 77% | 77% | 78% | 78% | 78% | 84% |
| 70% | 67% | 56% | 52% | 45% | 41% | 39% | 37% | 37% | 45% | 47% | 64% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 15 | 14 | 19 | 19 | 21 | 19 | 20 | 21 | 22 | 23 | 22 | 18 |
| 11 | 10 | 9 | 10 | 10 | 11 | 11 | 10 | 8 | 8 | 7 | 10 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 2 | 1 |
| 66 | 71 | 121 | 135 | 173 | 186 | 204 | 217 | 201 | 171 | 158 | 84 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -7°C | Hi 3°C Lo -6°C | Hi 9°C Lo -1°C | Hi 15°C Lo 4°C | Hi 21°C Lo 10°C | Hi 25°C Lo 15°C | Hi 28°C Lo 17°C | Hi 27°C Lo 16°C | Hi 24°C Lo 13°C | Hi 17°C Lo 7°C | Hi 9°C Lo 1°C | Hi 4°C Lo -3°C |
| 14 km/h | 13 km/h | 13 km/h | 13 km/h | 11 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h | 12 km/h | 13 km/h | 13 km/h |
| 83 mm | 86 mm | 104 mm | 127 mm | 117 mm | 137 mm | 125 mm | 100 mm | 102 mm | 104 mm | 86 mm | 97 mm |
| 86% | 85% | 78% | 77% | 78% | 78% | 77% | 77% | 78% | 78% | 78% | 84% |
| 70% | 67% | 56% | 52% | 45% | 41% | 39% | 37% | 37% | 45% | 47% | 64% |
| 1019 mb | 1019 mb | 1019 mb | 1015 mb | 1016 mb | 1014 mb | 1015 mb | 1016 mb | 1017 mb | 1017 mb | 1020 mb | 1019 mb |
| 15 | 14 | 19 | 19 | 21 | 19 | 20 | 21 | 22 | 23 | 22 | 18 |
| 11 | 10 | 9 | 10 | 10 | 11 | 11 | 10 | 8 | 8 | 7 | 10 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 2 | 1 |
| 66 | 71 | 121 | 135 | 173 | 186 | 204 | 217 | 201 | 171 | 158 | 84 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.