Harman US

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

WhenTempForecastWindPrecip
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

Nearby towns & communities

All Illinois locations ›

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.