Cave-In-Rock, IL Weather & Growing Conditions
This Afternoon
66°F
Mostly Cloudy
Mostly cloudy. High near 66, with temperatures falling to around 60 in the afternoon. West southwest wind 6 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Cloudy | 6 to 10 mph WSW | 0% |
| Tonight | 48°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 65°F | Sunny | 3 to 7 mph SW | 0% |
| Thursday Night | 43°F | Partly Cloudy | 3 mph W | 0% |
| Friday | 57°F | Partly Sunny | 3 to 8 mph NNW | 0% |
| Friday Night | 34°F | Mostly Clear | 2 to 7 mph N | 0% |
| Saturday | 54°F | Sunny | 5 mph N | 0% |
| Saturday Night | 31°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 57°F | Sunny | 3 mph NW | 0% |
| Sunday Night | 32°F | Mostly Clear | 1 mph NW | 0% |
| Monday | 61°F | Sunny | 0 to 3 mph SW | 0% |
| Monday Night | 35°F | Clear | 2 mph SW | 1% |
| Tuesday | 64°F | Sunny | 3 mph W | 0% |
| Tuesday Night | 38°F | Mostly Clear | 2 mph WNW | 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.