Harman US

Rockwood, IL Weather & Growing Conditions

Overnight
54°F
Mostly Cloudy
Mostly cloudy. Low around 54, with temperatures rising to around 57 overnight. Southwest wind around 8 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 54°F Mostly Cloudy 8 mph SW 8%
Wednesday 66°F Partly Sunny 5 to 9 mph WSW 3%
Wednesday Night 43°F Mostly Clear 3 mph WSW 0%
Thursday 68°F Sunny 2 to 7 mph WSW 0%
Thursday Night 45°F Partly Cloudy 5 mph NW 1%
Friday 59°F Partly Sunny 5 to 10 mph NNW 1%
Friday Night 36°F Partly Cloudy 3 to 7 mph N 0%
Saturday 55°F Mostly Sunny 5 mph N 0%
Saturday Night 33°F Partly Cloudy 2 mph NNW 0%
Sunday 61°F Sunny 2 to 6 mph NW 1%
Sunday Night 35°F Clear 2 mph WNW 0%
Monday 65°F Sunny 1 to 5 mph SW 0%
Monday Night 39°F Clear 2 mph SW 0%
Tuesday 69°F Sunny 3 mph W 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Rockwood, IL

Last spring frost
Apr 19
First fall frost
Oct 20
Growing season
182 days
Hardiness zone
7a

Explore more for Rockwood, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Perryville Wtp, Mo (16.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.