Blue Mound, IL Weather & Growing Conditions
Today
63°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy. High near 63, with temperatures falling to around 58 in the afternoon. Southwest wind 12 to 15 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Slight Chance Drizzle | 12 to 15 mph SW | 10% |
| Tonight | 43°F | Slight Chance Drizzle then Mostly Cloudy | 12 mph WSW | 10% |
| Thursday | 61°F | Partly Sunny | 10 to 15 mph WSW | 8% |
| Thursday Night | 43°F | Mostly Cloudy | 5 to 8 mph NW | 2% |
| Friday | 54°F | Partly Sunny | 9 to 13 mph NNW | 6% |
| Friday Night | 33°F | Partly Cloudy | 2 to 9 mph NNW | 0% |
| Saturday | 54°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph NW | 1% |
| Sunday | 59°F | Sunny | 2 to 9 mph WNW | 1% |
| Sunday Night | 33°F | Clear | 1 to 5 mph W | 1% |
| Monday | 64°F | Sunny | 1 to 8 mph SW | 0% |
| Monday Night | 39°F | Clear | 5 mph SW | 0% |
| Tuesday | 66°F | Sunny | 6 mph WNW | 1% |
| Tuesday Night | 39°F | Mostly Clear | 3 mph N | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blue Mound, IL
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
Explore more for Blue Mound, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Decatur Wtp, Il (12.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.