Onarga, Illinois Climate
United States
Pop. 1,321 Elev. 206 m / 676 ft
TZ: America/Chicago (UTC-5) ·
Onarga has a dry climate with warm summers reaching 86°F (30°C) in July and cold winters averaging 16°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 98°F (37°C), while wind chill can drive winter lows to 7°F (-14°C). Rain falls on about 46 days per year (31.9 in / 809 mm total), with snow on 4 days and 31 in (783 mm) of annual accumulation. The city averages 113 sunny days per year and around 28 thunderstorm days.
| Temperature | 86°F (30°C) high | 16°F (-9°C) low |
| Feels like | 98°F (37°C) high | 7°F (-14°C) low |
| Rain | 46 days | 31.9 in (809 mm) /yr |
| Snow | 4 days | 30.8 in (783 mm) /yr |
| Sky | 113 sunny | 28 stormy |
| Wind | 3.0 mph (1.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Aug, Sep
Sky & Air by Month
Cloud cover (%)
55
Jan 62
Feb 54
Mar 67
Apr 62
May 57
Jun 65
Jul 51
Aug 34
Sep 45
Oct 53
Nov 74
Dec Humidity (%)
64
Jan 64
Feb 55
Mar 58
Apr 61
May 68
Jun 74
Jul 72
Aug 58
Sep 59
Oct 65
Nov 77
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 49 mi University of Illinois Willard Airport (CMI)
Ski resort 74 mi
National park 63 mi Gaylord Butterfly Preserve
Mountain peak
(5,177 ft) 430 mi Snake Den Mountain
Hospital 15 mi Iroquois Memorial Hospital
Hiking trail 23 mi Dark Sky Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 16°F -9°C | 0.7 in 17 mm | 7.7 in195 mm | 13 |
| February | 38°F 4°C | 23°F -5°C | 0.3 in 9 mm | 6.0 in152 mm | 7 |
| March | 60°F 16°C | 38°F 4°C | 3.2 in 81 mm | 1.7 in43 mm | 11 |
| April | 65°F 18°C | 45°F 7°C | 4.0 in 102 mm | 0.1 in2 mm | 4 |
| May | 72°F 22°C | 52°F 11°C | 4.0 in 103 mm | — | 8 |
| June | 84°F 29°C | 66°F 19°C | 4.8 in 123 mm | — | 9 |
| July | 86°F 30°C | 71°F 21°C | 5.5 in 139 mm | — | 5 |
| August | 82°F 28°C | 64°F 18°C | 2.1 in 54 mm | — | 11 |
| September | 82°F 28°C | 57°F 14°C | 0.9 in 24 mm | — | 17 |
| October | 70°F 21°C | 50°F 10°C | 3.6 in 91 mm | — | 14 |
| November | 52°F 11°C | 36°F 2°C | 1.4 in 36 mm | 8.7 in220 mm | 10 |
| December | 38°F 3°C | 22°F -6°C | 1.2 in 31 mm | 6.7 in170 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 7 | 0 |
| March | 11 | 5 |
| April | 4 | 3 |
| May | 8 | 3 |
| June | 9 | 5 |
| July | 5 | 6 |
| August | 11 | 3 |
| September | 17 | 1 |
| October | 14 | 1 |
| November | 10 | 0 |
| December | 4 | 1 |