Roscoe, IL Weather & Growing Conditions
Tonight
57°F
Rain
Rain. Cloudy. Low around 57, with temperatures rising to around 60 overnight. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain | 15 mph S | 83% |
| Wednesday | 60°F | Chance Rain then Chance Rain Showers | 15 mph SSW | 49% |
| Wednesday Night | 46°F | Chance Rain Showers | 15 mph SW | 31% |
| Thursday | 54°F | Rain Showers Likely | 10 to 15 mph WSW | 61% |
| Thursday Night | 39°F | Chance Rain Showers | 5 to 10 mph NNW | 33% |
| Friday | 50°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph N | 18% |
| Friday Night | 31°F | Partly Cloudy | 0 to 10 mph NNW | 2% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WNW | 2% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph WSW | 3% |
| Sunday | 58°F | Mostly Sunny then Slight Chance Rain | 5 to 10 mph W | 16% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 5% |
| Monday | 60°F | Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 37°F | Mostly Clear | 5 to 10 mph W | 1% |
| Tuesday | 61°F | Sunny | 5 to 10 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Roscoe, IL
Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b
Explore more for Roscoe, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Beloit, Wi (5.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.