Spring Grove, IL Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 57% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 0 to 5 mph WSW | 74% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 0 to 5 mph NW | 74% |
| Thursday | 78°F | Chance Rain Showers | 0 to 5 mph NNE | 47% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph N | 14% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph SSW | 7% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 22% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 22% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 46% |
| Monday | 84°F | Chance Rain Showers | 5 mph SSW | 45% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 mph WSW | 46% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spring Grove, IL
Last spring frost
Apr 23
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
5b
Explore more for Spring Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Antioch, Il (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.