Rocky Spring Access Area, Illinois Climate Averages

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Rocky Spring Access Area Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 35°F Lo 22°F Hi 40°F Lo 25°F Hi 53°F Lo 36°F Hi 63°F Lo 46°F Hi 73°F Lo 56°F Hi 82°F Lo 65°F Hi 84°F Lo 67°F Hi 83°F Lo 65°F Hi 78°F Lo 59°F Hi 66°F Lo 49°F Hi 52°F Lo 37°F Hi 41°F Lo 29°F
10 mph 10 mph 11 mph 11 mph 9 mph 8 mph 6 mph 7 mph 7 mph 10 mph 10 mph 10 mph
2.7 in 3 in 4.4 in 6.6 in 5.4 in 5.4 in 4.9 in 3.9 in 3.4 in 3.8 in 3.8 in 3.2 in
78% 78% 75% 75% 77% 77% 82% 80% 72% 68% 71% 77%
56% 54% 50% 47% 44% 32% 33% 33% 30% 35% 40% 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 23 22 22 22 23 24 25 24 24 22
7 6 7 8 9 8 8 7 5 7 5 7
4 3 1 0 0 0 0 0 0 0 1 2
1 1 1 0 0 1 1 1 1 0 1 1
2 2 3 4 5 6 6 5 5 3 2 1
134 132 151 158 165 212 208 232 234 207 190 144
January
February
March
April
May
June
July
August
September
October
November
December
Hi 2°C Lo -6°C Hi 4°C Lo -4°C Hi 12°C Lo 3°C Hi 17°C Lo 8°C Hi 23°C Lo 13°C Hi 28°C Lo 18°C Hi 29°C Lo 20°C Hi 28°C Lo 18°C Hi 26°C Lo 15°C Hi 19°C Lo 9°C Hi 11°C Lo 3°C Hi 5°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 11 km/h 12 km/h 16 km/h 16 km/h 16 km/h
68 mm 76 mm 112 mm 168 mm 137 mm 137 mm 125 mm 98 mm 87 mm 97 mm 96 mm 80 mm
78% 78% 75% 75% 77% 77% 82% 80% 72% 68% 71% 77%
56% 54% 50% 47% 44% 32% 33% 33% 30% 35% 40% 54%
1021 mb 1020 mb 1018 mb 1015 mb 1015 mb 1014 mb 1015 mb 1015 mb 1017 mb 1017 mb 1020 mb 1020 mb
20 19 23 22 22 22 23 24 25 24 24 22
7 6 7 8 9 8 8 7 5 7 5 7
4 3 1 0 0 0 0 0 0 0 1 2
1 1 1 0 0 1 1 1 1 0 1 1
2 2 3 4 5 6 6 5 5 3 2 1
134 132 151 158 165 212 208 232 234 207 190 144
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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