Olney, Illinois Climate

United States

Pop. 9,005 Elev. 145 m / 476 ft TZ: America/Chicago (UTC-5) ·

Olney has warm summers with average highs of 89°F (32°C) in July, and frigid winters averaging 19°F (-7°C) in January. Humidity pushes the summer feels-like temperature to around 106°F (41°C). Rain falls on about 66 days per year (43.1 in / 1095 mm total), with snow on 5 days and 27 in (676 mm) of annual accumulation. The city averages 127 sunny days per year and around 44 thunderstorm days.

Temperature 89°F (32°C) high 19°F (-7°C) low
Feels like 106°F (41°C) high 13°F (-10°C) low
Rain 66 days 43.1 in (1095 mm) /yr
Snow 5 days 26.6 in (676 mm) /yr
Sky 127 sunny 44 stormy
Wind 2.3 mph (1.0 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 (%)
49
Jan
62
Feb
54
Mar
63
Apr
65
May
58
Jun
58
Jul
43
Aug
35
Sep
44
Oct
53
Nov
64
Dec
Humidity (%)
67
Jan
67
Feb
53
Mar
61
Apr
62
May
67
Jun
74
Jul
67
Aug
61
Sep
66
Oct
67
Nov
71
Dec

Weather Days by Month

↓ Weather days table

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Nearby Cities

Nearby

Commercial airport 57 mi Evansville Regional Airport (EVV)
Ski resort 139 mi Hidden Valley
National park 55 mi Shakamak State Park
Mountain peak (5,125 ft) 325 mi Little Haw Knob
Hospital 1 mi Carle Richland Memorial Hospital
Hiking trail 56 mi ADT - Indiana (South) - H - Seg 6

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 35°F 2°C 19°F -7°C 1.3 in 32 mm 12.8 in325 mm 13
February 44°F 7°C 27°F -3°C 3.2 in 82 mm 5.9 in151 mm 9
March 64°F 18°C 42°F 6°C 3.8 in 96 mm 0.4 in10 mm 10
April 70°F 21°C 50°F 10°C 7.5 in 191 mm 5
May 75°F 24°C 58°F 14°C 4.7 in 119 mm 7
June 86°F 30°C 70°F 21°C 4.9 in 125 mm 9
July 89°F 32°C 74°F 23°C 6.0 in 154 mm 9
August 85°F 29°C 66°F 19°C 1.1 in 27 mm 15
September 84°F 29°C 60°F 15°C 3.1 in 78 mm 18
October 71°F 22°C 51°F 10°C 3.0 in 77 mm 18
November 56°F 13°C 39°F 4°C 3.5 in 89 mm 2.2 in56 mm 9
December 45°F 7°C 31°F -1°C 1.1 in 27 mm 5.3 in134 mm 5

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 13 0
February 9 3
March 10 3
April 5 6
May 7 5
June 9 7
July 9 10
August 15 1
September 18 3
October 18 3
November 9 3
December 5 0