Weather World
Jefferson County Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 53°F Lo 36°F | Hi 57°F Lo 39°F | Hi 67°F Lo 48°F | Hi 74°F Lo 54°F | Hi 81°F Lo 63°F | Hi 90°F Lo 72°F | Hi 95°F Lo 76°F | Hi 96°F Lo 76°F | Hi 88°F Lo 69°F | Hi 77°F Lo 58°F | Hi 64°F Lo 47°F | Hi 55°F Lo 39°F |
| 10 mph | 10 mph | 11 mph | 11 mph | 10 mph | 9 mph | 9 mph | 8 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 2 in | 2.2 in | 3.1 in | 4.4 in | 6.9 in | 3.7 in | 2.9 in | 3.4 in | 4.1 in | 4.5 in | 2.6 in | 2.3 in |
| 60% | 65% | 64% | 68% | 73% | 67% | 57% | 53% | 60% | 62% | 65% | 64% |
| 28% | 34% | 34% | 35% | 36% | 23% | 22% | 21% | 26% | 25% | 28% | 33% |
| 30.2 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 27 | 22 | 25 | 24 | 22 | 24 | 25 | 25 | 25 | 26 | 26 | 27 |
| 3 | 5 | 5 | 6 | 9 | 6 | 6 | 6 | 5 | 5 | 3 | 4 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 3 | 4 | 5 | 6 | 7 | 7 | 7 | 6 | 4 | 3 | 3 |
| 251 | 205 | 215 | 204 | 198 | 263 | 281 | 292 | 249 | 248 | 245 | 230 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 12°C Lo 2°C | Hi 14°C Lo 4°C | Hi 20°C Lo 9°C | Hi 23°C Lo 12°C | Hi 27°C Lo 17°C | Hi 32°C Lo 22°C | Hi 35°C Lo 24°C | Hi 36°C Lo 24°C | Hi 31°C Lo 21°C | Hi 25°C Lo 14°C | Hi 18°C Lo 8°C | Hi 13°C Lo 4°C |
| 16 km/h | 17 km/h | 18 km/h | 18 km/h | 16 km/h | 15 km/h | 14 km/h | 13 km/h | 13 km/h | 16 km/h | 16 km/h | 16 km/h |
| 50 mm | 56 mm | 79 mm | 112 mm | 176 mm | 94 mm | 73 mm | 85 mm | 105 mm | 115 mm | 66 mm | 58 mm |
| 60% | 65% | 64% | 68% | 73% | 67% | 57% | 53% | 60% | 62% | 65% | 64% |
| 28% | 34% | 34% | 35% | 36% | 23% | 22% | 21% | 26% | 25% | 28% | 33% |
| 1021 mb | 1019 mb | 1016 mb | 1013 mb | 1012 mb | 1012 mb | 1013 mb | 1013 mb | 1015 mb | 1016 mb | 1019 mb | 1020 mb |
| 27 | 22 | 25 | 24 | 22 | 24 | 25 | 25 | 25 | 26 | 26 | 27 |
| 3 | 5 | 5 | 6 | 9 | 6 | 6 | 6 | 5 | 5 | 3 | 4 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 3 | 4 | 5 | 6 | 7 | 7 | 7 | 6 | 4 | 3 | 3 |
| 251 | 205 | 215 | 204 | 198 | 263 | 281 | 292 | 249 | 248 | 245 | 230 |
| 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.