Spring Grove, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spring Grove, a village in Mchenry County, Illinois.
This Afternoon
67°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 67. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Spring Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Showers And Thunderstorms Likely | 5 mph E | 68% |
| Tonight | 61°F | Showers And Thunderstorms | 5 to 10 mph ENE | 98% |
| Sunday | 66°F | Showers And Thunderstorms | 10 to 15 mph NE | 79% |
| Sunday Night | 54°F | Mostly Cloudy | 10 to 15 mph NE | 14% |
| Monday | 63°F | Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph ENE | 31% |
| Tuesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 12% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 13% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 10 mph NE | 5% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NE | 12% |
| Friday | 70°F | Partly Sunny | 0 to 5 mph NE | 9% |
| Friday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Spring Grove (42.451, -88.240). Updated through the day.
Growing snapshot for Spring Grove
Last spring frost
Apr 23
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
5b
More local growing data for Spring Grove: nearby ZIP 60081 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Antioch, Il (6.9 mi from Spring Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.