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