Cave-In-Rock, IL Weather & Growing Conditions
Today
84°F
Sunny
Sunny. High near 84, with temperatures falling to around 82 in the afternoon. North northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 3 mph NNE | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph NNE | 0% |
| Wednesday | 87°F | Sunny | 1 mph WSW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 2 mph S | 1% |
| Thursday | 88°F | Partly Sunny | 5 mph SSW | 12% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 mph S | 31% |
| Friday | 87°F | Chance Showers And Thunderstorms | 5 mph SSW | 38% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 2 mph SW | 37% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 5 mph SW | 31% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SSW | 27% |
| Sunday | 88°F | Mostly Sunny | 2 to 6 mph SSW | 13% |
| Sunday Night | 71°F | Mostly Clear | 3 mph SSW | 10% |
| Monday | 90°F | Sunny | 6 mph SSW | 5% |
| Monday Night | 73°F | Mostly Clear | 5 mph SSW | 8% |
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 Aug 4, 2026.