Weather World
Summum Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 33°F Lo 20°F | Hi 38°F Lo 23°F | Hi 52°F Lo 35°F | Hi 62°F Lo 44°F | Hi 73°F Lo 55°F | Hi 82°F Lo 64°F | Hi 84°F Lo 67°F | Hi 84°F Lo 65°F | Hi 79°F Lo 59°F | Hi 65°F Lo 48°F | Hi 51°F Lo 36°F | Hi 40°F Lo 27°F |
| 10 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 7 mph | 7 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 2.3 in | 2.4 in | 4.2 in | 6 in | 6.2 in | 6.6 in | 4.7 in | 3.9 in | 3.3 in | 3.9 in | 3.3 in | 2.7 in |
| 79% | 77% | 73% | 73% | 76% | 78% | 81% | 78% | 71% | 67% | 71% | 76% |
| 55% | 52% | 48% | 47% | 43% | 33% | 33% | 31% | 28% | 37% | 40% | 52% |
| 30.1 in | 30.1 in | 30.0 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 |
| 20 | 19 | 22 | 22 | 20 | 21 | 23 | 24 | 25 | 25 | 24 | 23 |
| 6 | 6 | 7 | 8 | 11 | 9 | 8 | 7 | 5 | 6 | 6 | 6 |
| 5 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 3 | 2 | 1 |
| 133 | 136 | 161 | 158 | 176 | 222 | 226 | 237 | 248 | 200 | 192 | 150 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -7°C | Hi 3°C Lo -5°C | Hi 11°C Lo 2°C | Hi 17°C Lo 7°C | Hi 23°C Lo 13°C | Hi 28°C Lo 18°C | Hi 29°C Lo 19°C | Hi 29°C Lo 18°C | Hi 26°C Lo 15°C | Hi 19°C Lo 9°C | Hi 11°C Lo 2°C | Hi 4°C Lo -3°C |
| 16 km/h | 16 km/h | 17 km/h | 17 km/h | 14 km/h | 12 km/h | 11 km/h | 11 km/h | 12 km/h | 15 km/h | 16 km/h | 16 km/h |
| 59 mm | 61 mm | 107 mm | 152 mm | 158 mm | 169 mm | 120 mm | 100 mm | 85 mm | 98 mm | 84 mm | 70 mm |
| 79% | 77% | 73% | 73% | 76% | 78% | 81% | 78% | 71% | 67% | 71% | 76% |
| 55% | 52% | 48% | 47% | 43% | 33% | 33% | 31% | 28% | 37% | 40% | 52% |
| 1021 mb | 1020 mb | 1017 mb | 1014 mb | 1014 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1020 mb | 1019 mb |
| 20 | 19 | 22 | 22 | 20 | 21 | 23 | 24 | 25 | 25 | 24 | 23 |
| 6 | 6 | 7 | 8 | 11 | 9 | 8 | 7 | 5 | 6 | 6 | 6 |
| 5 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 3 | 2 | 1 |
| 133 | 136 | 161 | 158 | 176 | 222 | 226 | 237 | 248 | 200 | 192 | 150 |
| 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.