Weather World
Grundy County Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 31°F Lo 18°F | Hi 35°F Lo 21°F | Hi 49°F Lo 33°F | Hi 60°F Lo 42°F | Hi 71°F Lo 53°F | Hi 80°F Lo 62°F | Hi 82°F Lo 65°F | Hi 82°F Lo 63°F | Hi 77°F Lo 57°F | Hi 63°F Lo 47°F | Hi 49°F Lo 35°F | Hi 38°F Lo 26°F |
| 10 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 7 mph | 6 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 2.2 in | 2.3 in | 4.1 in | 5.2 in | 6.1 in | 5.9 in | 4.5 in | 3.7 in | 3 in | 4.1 in | 2.7 in | 2.7 in |
| 81% | 80% | 74% | 73% | 75% | 78% | 83% | 81% | 73% | 69% | 72% | 78% |
| 59% | 56% | 51% | 50% | 44% | 36% | 35% | 33% | 31% | 40% | 42% | 57% |
| 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 |
| 18 | 18 | 22 | 21 | 20 | 20 | 23 | 23 | 24 | 24 | 24 | 22 |
| 8 | 7 | 8 | 9 | 11 | 10 | 8 | 8 | 6 | 7 | 6 | 6 |
| 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 119 | 126 | 149 | 147 | 174 | 208 | 214 | 226 | 229 | 185 | 178 | 127 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -1°C Lo -8°C | Hi 2°C Lo -6°C | Hi 9°C Lo 1°C | Hi 15°C Lo 6°C | Hi 22°C Lo 12°C | Hi 27°C Lo 17°C | Hi 28°C Lo 18°C | Hi 28°C Lo 17°C | Hi 25°C Lo 14°C | Hi 18°C Lo 8°C | Hi 10°C Lo 2°C | Hi 3°C Lo -3°C |
| 16 km/h | 16 km/h | 17 km/h | 17 km/h | 14 km/h | 13 km/h | 10 km/h | 10 km/h | 12 km/h | 15 km/h | 16 km/h | 16 km/h |
| 56 mm | 59 mm | 105 mm | 132 mm | 155 mm | 149 mm | 114 mm | 94 mm | 76 mm | 103 mm | 67 mm | 67 mm |
| 81% | 80% | 74% | 73% | 75% | 78% | 83% | 81% | 73% | 69% | 72% | 78% |
| 59% | 56% | 51% | 50% | 44% | 36% | 35% | 33% | 31% | 40% | 42% | 57% |
| 1020 mb | 1020 mb | 1018 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1019 mb | 1019 mb |
| 18 | 18 | 22 | 21 | 20 | 20 | 23 | 23 | 24 | 24 | 24 | 22 |
| 8 | 7 | 8 | 9 | 11 | 10 | 8 | 8 | 6 | 7 | 6 | 6 |
| 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 119 | 126 | 149 | 147 | 174 | 208 | 214 | 226 | 229 | 185 | 178 | 127 |
| 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.