Cave-In-Rock, IL Weather & Growing Conditions
Tonight
72°F
Mostly Clear
Mostly clear, with a low around 72. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Mostly Clear | 5 mph SSW | 1% |
| Sunday | 94°F | Mostly Sunny | 6 mph WSW | 2% |
| Sunday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph N | 15% |
| Monday | 88°F | Chance Showers And Thunderstorms | 5 mph NE | 26% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 6 mph NNE | 46% |
| Tuesday | 78°F | Chance Showers And Thunderstorms | 7 mph N | 39% |
| Tuesday Night | 58°F | Partly Cloudy | 5 to 8 mph N | 7% |
| Wednesday | 76°F | Mostly Sunny | 7 mph N | 5% |
| Wednesday Night | 56°F | Partly Cloudy | 6 mph N | 4% |
| Thursday | 76°F | Mostly Sunny | 2 to 6 mph N | 1% |
| Thursday Night | 57°F | Partly Cloudy | 5 mph NNE | 1% |
| Friday | 78°F | Mostly Sunny | 2 to 6 mph N | 4% |
| Friday Night | 57°F | Partly Cloudy | 5 mph NNE | 4% |
| Saturday | 79°F | Mostly Sunny | 2 to 6 mph NE | 2% |
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 Sep 20, 2026.