Deer Grove, IL Weather & Growing Conditions
Overnight
53°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy. Low around 53, with temperatures rising to around 57 overnight. South wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Slight Chance Rain Showers | 10 to 15 mph S | 23% |
| Wednesday | 58°F | Chance Rain Showers | 15 mph SW | 33% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SW | 16% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 45% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 20% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 31°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 3% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 62°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Deer Grove, IL
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
172 days
Hardiness zone
5b
Explore more for Deer Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Walnut, Il (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.