Cave-In-Rock, IL Weather & Growing Conditions
Today
66°F
Partly Sunny
Partly sunny. High near 66, with temperatures falling to around 63 in the afternoon. West southwest wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Partly Sunny | 5 to 8 mph WSW | 2% |
| Tonight | 45°F | Mostly Clear | 3 mph WSW | 0% |
| Thursday | 67°F | Sunny | 2 to 6 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 2 mph W | 0% |
| Friday | 60°F | Partly Sunny | 2 to 7 mph NNW | 0% |
| Friday Night | 37°F | Partly Cloudy | 3 to 7 mph NNW | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 2 mph NNW | 0% |
| Sunday | 59°F | Sunny | 1 to 5 mph NW | 0% |
| Sunday Night | 34°F | Mostly Clear | 2 mph WNW | 1% |
| Monday | 63°F | Sunny | 0 to 3 mph WSW | 0% |
| Monday Night | 37°F | Clear | 2 mph SW | 1% |
| Tuesday | 67°F | Sunny | 5 mph WSW | 1% |
| Tuesday Night | 39°F | Mostly Clear | 2 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cave-In-Rock, IL
Last spring frost
Apr 19
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
7a
Explore more for Cave-In-Rock, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Rosiclare 5Nw, Il (15.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.