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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Explore on the MapMonthly Climate Chart
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
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →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
↑ See chart| 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 |