Shelbyville, Illinois Climate

United States

Pop. 4,599 Elev. 200 m / 656 ft TZ: America/Chicago (UTC-5) ·

Shelbyville has warm summers with average highs of 87°F (31°C) in July, and frigid winters averaging 17°F (-8°C) in January. Humidity pushes the summer feels-like temperature to 102°F (39°C), while wind chill can drive winter lows to 9°F (-13°C). Rain falls on about 51 days per year (35.1 in / 892 mm total), with snow on 7 days and 31 in (781 mm) of annual accumulation. The city averages 131 sunny days per year and around 36 thunderstorm days. Nearby lake water reaches 82°F (28°C) in summer.

Temperature 87°F (31°C) high 17°F (-8°C) low
Feels like 102°F (39°C) high 9°F (-13°C) low
Rain 51 days 35.1 in (892 mm) /yr
Snow 7 days 30.7 in (781 mm) /yr
Sky 131 sunny 36 stormy
Wind 2.6 mph (1.2 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Mar, Aug, Sep, Oct

Sky & Air by Month

Cloud cover (%)
50
Jan
60
Feb
53
Mar
66
Apr
62
May
58
Jun
61
Jul
45
Aug
32
Sep
44
Oct
51
Nov
66
Dec
Humidity (%)
70
Jan
66
Feb
55
Mar
62
Apr
65
May
72
Jun
78
Jul
72
Aug
63
Sep
65
Oct
67
Nov
78
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

Cities with Similar Climate

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Nearby Cities

Nearby

Commercial airport 30 mi Decatur Airport (DEC)
Ski resort 117 mi Hidden Valley
National park 85 mi Shakamak State Park
Mountain peak (5,125 ft) 385 mi Little Haw Knob
Hospital 1 mi HSHS Good Shepherd Hospital
Hiking trail 31 mi Bluestem Loop

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 32°F 0°C 17°F -8°C 0.6 in 15 mm 10.0 in253 mm 14
February 41°F 5°C 25°F -4°C 0.7 in 17 mm 5.8 in146 mm 8
March 63°F 17°C 40°F 4°C 2.9 in 74 mm 0.9 in24 mm 12
April 68°F 20°C 47°F 8°C 5.4 in 138 mm 5
May 73°F 23°C 55°F 13°C 3.9 in 100 mm 6
June 84°F 29°C 68°F 20°C 6.6 in 167 mm 8
July 87°F 31°C 72°F 22°C 6.7 in 170 mm 6
August 83°F 28°C 65°F 18°C 1.0 in 24 mm 17
September 82°F 28°C 58°F 14°C 2.1 in 53 mm 20
October 70°F 21°C 50°F 10°C 2.3 in 57 mm 18
November 54°F 12°C 37°F 3°C 2.1 in 54 mm 6.5 in166 mm 11
December 41°F 5°C 25°F -4°C 0.9 in 23 mm 7.6 in192 mm 6

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 14 0
February 8 0
March 12 2
April 5 7
May 6 4
June 8 7
July 6 7
August 17 2
September 20 4
October 18 2
November 11 1
December 6 0

Water Temperatures Data

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Month Lake Avg High
January 33°F 1°C
February 33°F 0°C
March 48°F 9°C
April 58°F 14°C
May 65°F 18°C
June 76°F 24°C
July 82°F 28°C
August 77°F 25°C
September 71°F 22°C
October 62°F 17°C
November 46°F 8°C
December 34°F 1°C