Rock City, IL Weather & Growing Conditions
This Afternoon
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 69. East wind around 15 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Showers And Thunderstorms | 15 mph E | 44% |
| Tonight | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 to 15 mph E | 83% |
| Saturday | 76°F | Showers And Thunderstorms | 5 to 10 mph SE | 93% |
| Saturday Night | 61°F | Showers And Thunderstorms | 5 to 10 mph N | 75% |
| Sunday | 67°F | Rain Showers Likely | 15 mph NE | 58% |
| Sunday Night | 54°F | Chance Rain Showers | 15 to 20 mph NE | 43% |
| Monday | 63°F | Chance Rain Showers | 15 to 20 mph NE | 42% |
| Monday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 42% |
| Tuesday | 62°F | Chance Rain Showers | 15 mph NE | 31% |
| Tuesday Night | 47°F | Mostly Cloudy | 5 to 15 mph NE | 9% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 5% |
| Wednesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Thursday | 67°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rock City, IL
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
5a
Explore more for Rock City, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Freeport Waste Wtp, Il (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.