Weather World
Illiopolis High School Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 34°F Lo 21°F | Hi 38°F Lo 24°F | Hi 52°F Lo 36°F | Hi 62°F Lo 45°F | Hi 73°F Lo 56°F | Hi 81°F Lo 64°F | Hi 83°F Lo 67°F | Hi 82°F Lo 65°F | Hi 78°F Lo 59°F | Hi 65°F Lo 48°F | Hi 51°F Lo 36°F | Hi 40°F Lo 28°F |
| 10 mph | 10 mph | 11 mph | 11 mph | 9 mph | 8 mph | 7 mph | 7 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 2.4 in | 2.6 in | 4.6 in | 6.7 in | 5.6 in | 5.7 in | 4.3 in | 3.5 in | 3.4 in | 3.8 in | 3.2 in | 2.8 in |
| 79% | 77% | 74% | 73% | 75% | 78% | 83% | 80% | 72% | 67% | 71% | 77% |
| 57% | 54% | 51% | 48% | 43% | 34% | 34% | 32% | 30% | 37% | 41% | 54% |
| 30.1 in | 30.1 in | 30.0 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 |
| 20 | 19 | 22 | 21 | 21 | 21 | 24 | 24 | 25 | 24 | 24 | 22 |
| 6 | 6 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 6 | 5 | 6 |
| 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 4 | 3 | 1 | 1 |
| 129 | 130 | 153 | 154 | 164 | 207 | 207 | 231 | 234 | 199 | 190 | 141 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -6°C | Hi 4°C Lo -5°C | Hi 11°C Lo 2°C | Hi 17°C Lo 7°C | Hi 23°C Lo 13°C | Hi 27°C Lo 18°C | Hi 28°C Lo 19°C | Hi 28°C Lo 18°C | Hi 26°C Lo 15°C | Hi 18°C Lo 9°C | Hi 11°C Lo 2°C | Hi 5°C Lo -2°C |
| 17 km/h | 17 km/h | 17 km/h | 17 km/h | 14 km/h | 13 km/h | 10 km/h | 11 km/h | 12 km/h | 16 km/h | 16 km/h | 16 km/h |
| 60 mm | 65 mm | 118 mm | 170 mm | 143 mm | 146 mm | 110 mm | 90 mm | 86 mm | 97 mm | 82 mm | 72 mm |
| 79% | 77% | 74% | 73% | 75% | 78% | 83% | 80% | 72% | 67% | 71% | 77% |
| 57% | 54% | 51% | 48% | 43% | 34% | 34% | 32% | 30% | 37% | 41% | 54% |
| 1021 mb | 1020 mb | 1018 mb | 1014 mb | 1015 mb | 1013 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1020 mb | 1020 mb |
| 20 | 19 | 22 | 21 | 21 | 21 | 24 | 24 | 25 | 24 | 24 | 22 |
| 6 | 6 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 6 | 5 | 6 |
| 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 4 | 3 | 1 | 1 |
| 129 | 130 | 153 | 154 | 164 | 207 | 207 | 231 | 234 | 199 | 190 | 141 |
| 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.