Gridley, Illinois Climate

United States

Pop. 1,439 Elev. 232 m / 761 ft TZ: America/Chicago (UTC-5) ·

Gridley has a dry climate with warm summers reaching 87°F (31°C) in July and cold winters averaging 17°F (-8°C) in January. Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 8°F (-13°C). Rain falls on about 48 days per year (31.3 in / 794 mm total), with snow on 3 days and 29 in (744 mm) of annual accumulation. The city averages 119 sunny days per year and around 31 thunderstorm days. Nearby lake water reaches 79°F (26°C) in summer.

Temperature 87°F (30°C) high 17°F (-8°C) low
Feels like 99°F (37°C) high 8°F (-13°C) low
Rain 48 days 31.3 in (794 mm) /yr
Snow 3 days 29.3 in (744 mm) /yr
Sky 119 sunny 31 stormy
Wind 3.0 mph (1.3 m/s) avg

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Monthly Climate Chart

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

Sky & Air by Month

Cloud cover (%)
53
Jan
60
Feb
53
Mar
67
Apr
59
May
53
Jun
67
Jul
51
Aug
35
Sep
45
Oct
52
Nov
72
Dec
Humidity (%)
63
Jan
64
Feb
56
Mar
59
Apr
59
May
68
Jun
75
Jul
74
Aug
60
Sep
61
Oct
66
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 18 mi Central Illinois Regional Airport at Bloomington-Normal (BMI)
Ski resort 86 mi
National park 93 mi Historic Pullman Foundation Exhibit Hall
Hospital 14 mi OSF Saint James - John W. Albrecht Medical Center
Hiking trail 27 mi Spring Lake Park

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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 0.5 in 14 mm 5.8 in147 mm 14
February 38°F 3°C 22°F -5°C 0.2 in 6 mm 5.3 in133 mm 8
March 60°F 16°C 38°F 3°C 3.4 in 86 mm 3.3 in83 mm 11
April 65°F 19°C 45°F 7°C 3.8 in 95 mm 0.0 in0 mm 4
May 73°F 23°C 53°F 12°C 3.0 in 77 mm 9
June 84°F 29°C 66°F 19°C 4.4 in 112 mm 8
July 87°F 30°C 71°F 21°C 5.9 in 149 mm 4
August 81°F 27°C 64°F 18°C 3.0 in 77 mm 14
September 82°F 28°C 57°F 14°C 1.3 in 34 mm 19
October 70°F 21°C 50°F 10°C 3.0 in 76 mm 13
November 52°F 11°C 36°F 2°C 1.4 in 35 mm 8.0 in202 mm 10
December 37°F 3°C 21°F -6°C 1.3 in 33 mm 7.0 in179 mm 5

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 14 0
February 8 0
March 11 4
April 4 4
May 9 2
June 8 3
July 4 8
August 14 4
September 19 2
October 13 2
November 10 1
December 5 1

Water Temperatures Data

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Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 42°F 6°C
April 53°F 12°C
May 61°F 16°C
June 73°F 23°C
July 79°F 26°C
August 75°F 24°C
September 68°F 20°C
October 59°F 15°C
November 43°F 6°C
December 32°F 0°C