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Dorchester, Illinois Climate Averages

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Dorchester Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 37°F Lo 23°F Hi 41°F Lo 26°F Hi 54°F Lo 37°F Hi 64°F Lo 46°F Hi 74°F Lo 57°F Hi 83°F Lo 66°F Hi 85°F Lo 68°F Hi 84°F Lo 66°F Hi 79°F Lo 60°F Hi 66°F Lo 49°F Hi 53°F Lo 37°F Hi 43°F Lo 30°F
10 mph 10 mph 10 mph 10 mph 8 mph 7 mph 6 mph 6 mph 7 mph 9 mph 9 mph 9 mph
2.7 in 2.8 in 4.1 in 5.7 in 5.8 in 4.6 in 4.3 in 4.2 in 3.5 in 3.9 in 3.2 in 3 in
77% 77% 75% 76% 78% 77% 80% 79% 73% 69% 71% 75%
53% 49% 48% 44% 40% 30% 30% 29% 28% 34% 36% 48%
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
21 18 22 22 21 21 22 23 24 24 24 23
7 7 8 8 10 9 9 8 6 7 5 7
4 4 1 0 0 0 0 0 0 0 1 2
0 0 0 0 0 0 0 0 1 0 0 0
2 2 3 4 5 6 5 6 5 3 2 1
148 148 157 166 192 239 240 242 242 227 209 161
January
February
March
April
May
June
July
August
September
October
November
December
Hi 3°C Lo -5°C Hi 5°C Lo -3°C Hi 12°C Lo 3°C Hi 18°C Lo 8°C Hi 23°C Lo 14°C Hi 28°C Lo 19°C Hi 30°C Lo 20°C Hi 29°C Lo 19°C Hi 26°C Lo 16°C Hi 19°C Lo 9°C Hi 12°C Lo 3°C Hi 6°C Lo -1°C
16 km/h 16 km/h 16 km/h 16 km/h 13 km/h 11 km/h 10 km/h 10 km/h 11 km/h 14 km/h 15 km/h 15 km/h
69 mm 72 mm 105 mm 144 mm 147 mm 118 mm 108 mm 106 mm 89 mm 99 mm 80 mm 76 mm
77% 77% 75% 76% 78% 77% 80% 79% 73% 69% 71% 75%
53% 49% 48% 44% 40% 30% 30% 29% 28% 34% 36% 48%
1021 mb 1020 mb 1018 mb 1014 mb 1015 mb 1013 mb 1015 mb 1015 mb 1017 mb 1017 mb 1020 mb 1020 mb
21 18 22 22 21 21 22 23 24 24 24 23
7 7 8 8 10 9 9 8 6 7 5 7
4 4 1 0 0 0 0 0 0 0 1 2
0 0 0 0 0 0 0 0 1 0 0 0
2 2 3 4 5 6 5 6 5 3 2 1
148 148 157 166 192 239 240 242 242 227 209 161
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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