Sugar Grove, IL Weather & Growing Conditions
This Afternoon
69°F
Rain Likely
Rain likely and a slight chance of thunderstorms. Mostly cloudy. High near 69, with temperatures falling to around 66 in the afternoon. South southeast wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Rain Likely | 15 mph SSE | 64% |
| Tonight | 58°F | Rain | 15 mph S | 85% |
| Wednesday | 62°F | Chance Rain | 15 mph SSW | 53% |
| Wednesday Night | 47°F | Slight Chance Rain | 15 mph SW | 17% |
| Thursday | 56°F | Chance Rain | 10 to 15 mph WSW | 33% |
| Thursday Night | 42°F | Chance Rain | 5 to 10 mph WNW | 35% |
| Friday | 52°F | Slight Chance Rain then Mostly Cloudy | 10 to 15 mph N | 22% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NNW | 4% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 4% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph WSW | 4% |
| Sunday | 57°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Sunday Night | 34°F | Mostly Clear | 5 mph WNW | 5% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sugar Grove, IL
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
166 days
Hardiness zone
5b
Explore more for Sugar Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Aurora Muni Ap, Il (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.