Madison, IL Weather & Growing Conditions
Overnight
54°F
Chance Light Rain
A chance of rain before 3am, then a slight chance of drizzle. Mostly cloudy, with a low around 54. Southwest wind around 9 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Chance Light Rain | 9 mph SW | 38% |
| Wednesday | 63°F | Slight Chance Drizzle then Mostly Cloudy | 8 to 14 mph W | 12% |
| Wednesday Night | 45°F | Partly Cloudy | 7 mph W | 0% |
| Thursday | 66°F | Sunny | 6 to 12 mph W | 1% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph NW | 9% |
| Friday | 59°F | Mostly Cloudy | 6 to 12 mph NW | 6% |
| Friday Night | 39°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 63°F | Sunny | 2 to 7 mph W | 8% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 7 mph SW | 2% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 70°F | Sunny | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Madison, IL
Last spring frost
Apr 4
First fall frost
Nov 5
Growing season
214 days
Hardiness zone
7a
Explore more for Madison, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Alton - Melvin Price L&D, Il (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.