Blue Mound, IL Weather & Growing Conditions
Overnight
71°F
Mostly Cloudy
Mostly cloudy, with a low around 71. South southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Cloudy | 6 mph SSW | 5% |
| Sunday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph N | 38% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 67% |
| Monday | 72°F | Showers And Thunderstorms Likely | 13 mph ENE | 35% |
| Monday Night | 56°F | Chance Rain Showers | 9 to 13 mph NE | 16% |
| Tuesday | 68°F | Chance Rain Showers | 14 mph NE | 14% |
| Tuesday Night | 52°F | Mostly Cloudy | 6 to 12 mph NNE | 6% |
| Wednesday | 70°F | Mostly Sunny | 8 to 13 mph NNE | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 3 to 10 mph NNE | 0% |
| Thursday | 72°F | Mostly Sunny | 5 to 9 mph NNE | 0% |
| Thursday Night | 54°F | Mostly Cloudy | 3 to 8 mph NE | 2% |
| Friday | 74°F | Partly Sunny then Slight Chance Rain Showers | 5 to 8 mph NE | 2% |
| Friday Night | 51°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NE | 1% |
| Saturday | 76°F | Mostly Sunny | 6 mph ENE | 4% |
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 Sep 20, 2026.