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Hewittsville, Illinois Climate Averages

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Hewittsville Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 33°F Lo 22°F Hi 37°F Lo 25°F Hi 51°F Lo 37°F Hi 62°F Lo 46°F Hi 73°F Lo 57°F Hi 81°F Lo 65°F Hi 83°F Lo 66°F Hi 82°F Lo 64°F Hi 78°F Lo 59°F Hi 65°F Lo 49°F Hi 51°F Lo 37°F Hi 40°F Lo 29°F
11 mph 11 mph 10 mph 10 mph 9 mph 7 mph 6 mph 6 mph 7 mph 9 mph 10 mph 10 mph
3.2 in 3.2 in 4.7 in 7 in 7.1 in 7.3 in 5.5 in 5.3 in 4.6 in 4.8 in 4.1 in 3.3 in
78% 78% 75% 75% 77% 79% 83% 81% 74% 70% 71% 76%
54% 53% 47% 44% 39% 28% 28% 27% 27% 34% 37% 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 19 20 21 22 24 25 25 25 23 19
6 4 8 9 10 8 7 6 5 6 5 5
11 9 4 1 0 0 0 0 0 0 2 7
2 1 2 1 2 3 4 6 3 1 0 2
2 2 3 4 5 6 6 5 5 3 2 2
218 208 259 258 295 323 334 334 322 296 275 245
January
February
March
April
May
June
July
August
September
October
November
December
Hi 1°C Lo -6°C Hi 3°C Lo -4°C Hi 11°C Lo 3°C Hi 16°C Lo 8°C Hi 23°C Lo 14°C Hi 27°C Lo 18°C Hi 28°C Lo 19°C Hi 28°C Lo 18°C Hi 25°C Lo 15°C Hi 18°C Lo 9°C Hi 10°C Lo 3°C Hi 5°C Lo -1°C
17 km/h 17 km/h 17 km/h 17 km/h 14 km/h 12 km/h 10 km/h 10 km/h 12 km/h 15 km/h 16 km/h 16 km/h
82 mm 81 mm 120 mm 179 mm 181 mm 185 mm 139 mm 134 mm 116 mm 122 mm 104 mm 85 mm
78% 78% 75% 75% 77% 79% 83% 81% 74% 70% 71% 76%
54% 53% 47% 44% 39% 28% 28% 27% 27% 34% 37% 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 19 20 21 22 24 25 25 25 23 19
6 4 8 9 10 8 7 6 5 6 5 5
11 9 4 1 0 0 0 0 0 0 2 7
2 1 2 1 2 3 4 6 3 1 0 2
2 2 3 4 5 6 6 5 5 3 2 2
218 208 259 258 295 323 334 334 322 296 275 245
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.

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