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Weather in Cave-In-Rock, IL · National Weather Service + NOAA

Cave-In-Rock has milder winters than most of Illinois

Cave-In-Rock has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 26°, and about 3 inches of snow falls in a normal winter. A typical November afternoon reaches 57°, and nights fall to 37°.

Winter 46°/28°Spring 68°/46°Summer 87°/66°Fall 70°/48°
Right now
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Sunrise 7:20 am · sunset 5:51 pm

Getting the latest forecast from the National Weather Service…

What stands out about Cave-In-Rock’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Milder winters than most of IllinoisJanuary nights average 26°, milder than 2,870 of 2,886 Illinois towns.Less snow than most of IllinoisAbout 3 inches a winter, less than 2,873 of 2,880 Illinois towns.Warmer summers than most of IllinoisJuly afternoons average 89°, warmer than 2,823 of 2,886 Illinois towns.Wetter than most of Illinois49 inches of rain and melted snow a year, more than 2,851 of 2,886 Illinois towns.
A normal year

Where today sits in Cave-In-Rock’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
46° / 28°
1 days with an inch or more of snow
Spring
68° / 46°
Last frost around Apr 19
Summer
87° / 66°
31 days reach 90° in a normal year
Fall now
70° / 48°
First frost around Oct 20
Pastthe usual first frost (Oct 20). Last frost next spring: Apr 19
Best months to be outside
AprMaySepOct
Highs of 62–84° and lows of 40° or more
How much snow does Cave-In-Rock get?About 3 inches a winter.When is it wettest?May, with 4.9 inches.Is it warmer than it used to be?+0.7° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Cave-In-Rock.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Cave-In-Rock itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Rosiclare 5nw, IL (14 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.