Spring Grove, IL Weather & Growing Conditions
Overnight
61°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 3am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 61, with temperatures rising to around 63 overnight. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Showers And Thunderstorms Likely | 10 mph ESE | 93% |
| Saturday | 75°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SSE | 100% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph E | 92% |
| Sunday | 68°F | Chance Showers And Thunderstorms | 10 to 20 mph NE | 48% |
| Sunday Night | 54°F | Mostly Cloudy | 15 mph NE | 12% |
| Monday | 63°F | Slight Chance Rain Showers | 15 mph ENE | 24% |
| Monday Night | 50°F | Mostly Cloudy | 10 to 15 mph ENE | 14% |
| Tuesday | 61°F | Mostly Cloudy | 10 to 15 mph NE | 12% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 15 mph NE | 5% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 9% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Thursday | 66°F | Partly Sunny | 5 mph NE | 5% |
| Thursday Night | 51°F | Mostly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 5% |
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 Sep 19, 2026.