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Old Stonington, Illinois Climate Averages

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Old Stonington 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 36°F Hi 61°F Lo 45°F Hi 73°F Lo 56°F Hi 81°F Lo 64°F Hi 82°F Lo 66°F Hi 82°F Lo 64°F Hi 77°F Lo 59°F Hi 64°F Lo 49°F Hi 50°F Lo 37°F Hi 40°F Lo 29°F
11 mph 11 mph 11 mph 11 mph 9 mph 8 mph 6 mph 6 mph 7 mph 9 mph 10 mph 10 mph
2.7 in 2.9 in 4.1 in 6 in 6.2 in 6.4 in 5.3 in 4.7 in 3.6 in 3.8 in 3.4 in 2.9 in
78% 79% 75% 75% 78% 79% 84% 82% 75% 70% 71% 77%
55% 54% 48% 45% 40% 29% 28% 28% 28% 35% 38% 50%
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 20 21 22 23 24 25 25 26 24 20
5 4 7 8 9 7 7 6 5 5 5 4
11 9 4 1 0 0 0 0 0 0 2 7
1 2 2 1 2 3 5 6 3 1 1 2
2 2 3 4 5 6 5 5 5 3 2 2
216 204 254 256 292 323 331 329 319 291 272 241
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 2°C Hi 16°C Lo 7°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 4°C Lo -2°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
68 mm 74 mm 104 mm 153 mm 158 mm 161 mm 135 mm 119 mm 91 mm 96 mm 87 mm 74 mm
78% 79% 75% 75% 78% 79% 84% 82% 75% 70% 71% 77%
55% 54% 48% 45% 40% 29% 28% 28% 28% 35% 38% 50%
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 20 21 22 23 24 25 25 26 24 20
5 4 7 8 9 7 7 6 5 5 5 4
11 9 4 1 0 0 0 0 0 0 2 7
1 2 2 1 2 3 5 6 3 1 1 2
2 2 3 4 5 6 5 5 5 3 2 2
216 204 254 256 292 323 331 329 319 291 272 241
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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