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Stillwell, Illinois Climate Averages

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Stillwell Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 32°F Lo 20°F Hi 36°F Lo 23°F Hi 51°F Lo 36°F Hi 61°F Lo 44°F Hi 71°F Lo 55°F Hi 81°F Lo 65°F Hi 83°F Lo 67°F Hi 83°F Lo 65°F Hi 78°F Lo 58°F Hi 64°F Lo 48°F Hi 50°F Lo 36°F Hi 40°F Lo 28°F
10 mph 10 mph 10 mph 10 mph 9 mph 8 mph 7 mph 7 mph 8 mph 9 mph 10 mph 10 mph
2.1 in 2.3 in 3.9 in 5.3 in 6.5 in 6.3 in 4.9 in 4.6 in 4.3 in 3.9 in 2.9 in 2 in
79% 78% 75% 75% 80% 80% 81% 78% 74% 70% 72% 76%
52% 51% 48% 43% 40% 29% 26% 27% 27% 35% 37% 46%
30.1 in 30.1 in 30.1 in 29.9 in 29.9 in 29.9 in 30.0 in 30.0 in 30.0 in 30.0 in 30.1 in 30.1 in
15 16 20 21 21 22 24 25 24 25 23 21
4 3 6 8 10 8 7 6 6 5 5 4
11 9 5 1 0 0 0 0 0 0 2 7
2 2 2 2 3 4 4 5 4 2 1 2
2 2 3 4 5 6 6 5 5 3 2 2
229 216 257 258 289 321 338 339 316 292 271 251
January
February
March
April
May
June
July
August
September
October
November
December
Hi 0°C Lo -6°C Hi 2°C Lo -5°C Hi 10°C Lo 2°C Hi 16°C Lo 7°C Hi 22°C Lo 13°C Hi 27°C Lo 18°C Hi 29°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 2°C Hi 4°C Lo -2°C
17 km/h 17 km/h 17 km/h 16 km/h 14 km/h 12 km/h 10 km/h 11 km/h 12 km/h 15 km/h 16 km/h 16 km/h
53 mm 59 mm 100 mm 135 mm 165 mm 159 mm 125 mm 117 mm 108 mm 98 mm 74 mm 52 mm
79% 78% 75% 75% 80% 80% 81% 78% 74% 70% 72% 76%
52% 51% 48% 43% 40% 29% 26% 27% 27% 35% 37% 46%
1021 mb 1021 mb 1018 mb 1014 mb 1014 mb 1013 mb 1015 mb 1015 mb 1016 mb 1016 mb 1020 mb 1019 mb
15 16 20 21 21 22 24 25 24 25 23 21
4 3 6 8 10 8 7 6 6 5 5 4
11 9 5 1 0 0 0 0 0 0 2 7
2 2 2 2 3 4 4 5 4 2 1 2
2 2 3 4 5 6 6 5 5 3 2 2
229 216 257 258 289 321 338 339 316 292 271 251
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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