WeatherWX.comHarristown Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 32°F Lo 21°F | Hi 36°F Lo 24°F | Hi 50°F Lo 36°F | Hi 61°F Lo 45°F | Hi 72°F Lo 56°F | Hi 80°F Lo 64°F | Hi 82°F Lo 66°F | Hi 81°F Lo 64°F | Hi 77°F Lo 58°F | Hi 64°F Lo 48°F | Hi 50°F Lo 37°F | Hi 39°F Lo 29°F |
| 11 mph | 11 mph | 11 mph | 11 mph | 9 mph | 8 mph | 6 mph | 6 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 2 in | 2.1 in | 3.1 in | 4.5 in | 5 in | 5.1 in | 4 in | 3.8 in | 2.9 in | 3 in | 2.6 in | 2.1 in |
| 79% | 79% | 75% | 74% | 77% | 79% | 84% | 82% | 75% | 70% | 71% | 77% |
| 55% | 54% | 47% | 44% | 39% | 28% | 28% | 28% | 27% | 35% | 38% | 49% |
| 30.1 in | 30.1 in | 30.1 in | 29.9 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 | 15 | 20 | 22 | 23 | 23 | 25 | 26 | 26 | 26 | 24 | 19 |
| 5 | 4 | 7 | 7 | 8 | 7 | 6 | 5 | 4 | 5 | 5 | 5 |
| 11 | 10 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 |
| 2 | 2 | 2 | 1 | 2 | 4 | 5 | 7 | 4 | 1 | 1 | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 5 | 5 | 5 | 3 | 2 | 2 |
| 218 | 205 | 256 | 256 | 298 | 324 | 331 | 332 | 321 | 294 | 273 | 243 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 0°C Lo -6°C | Hi 2°C Lo -5°C | Hi 10°C Lo 2°C | Hi 16°C Lo 7°C | Hi 22°C Lo 14°C | Hi 27°C Lo 18°C | Hi 28°C Lo 19°C | Hi 27°C Lo 18°C | Hi 25°C Lo 15°C | Hi 18°C Lo 9°C | Hi 10°C Lo 3°C | Hi 4°C Lo -2°C |
| 17 km/h | 17 km/h | 17 km/h | 17 km/h | 15 km/h | 12 km/h | 10 km/h | 10 km/h | 12 km/h | 15 km/h | 16 km/h | 16 km/h |
| 52 mm | 53 mm | 78 mm | 113 mm | 127 mm | 130 mm | 101 mm | 98 mm | 75 mm | 75 mm | 65 mm | 52 mm |
| 79% | 79% | 75% | 74% | 77% | 79% | 84% | 82% | 75% | 70% | 71% | 77% |
| 55% | 54% | 47% | 44% | 39% | 28% | 28% | 28% | 27% | 35% | 38% | 49% |
| 1021 mb | 1020 mb | 1018 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1020 mb | 1020 mb |
| 15 | 15 | 20 | 22 | 23 | 23 | 25 | 26 | 26 | 26 | 24 | 19 |
| 5 | 4 | 7 | 7 | 8 | 7 | 6 | 5 | 4 | 5 | 5 | 5 |
| 11 | 10 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 |
| 2 | 2 | 2 | 1 | 2 | 4 | 5 | 7 | 4 | 1 | 1 | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 5 | 5 | 5 | 3 | 2 | 2 |
| 218 | 205 | 256 | 256 | 298 | 324 | 331 | 332 | 321 | 294 | 273 | 243 |
| 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.
