Mount Zion, IL Weather & Growing Conditions
Overnight
57°F
Light Rain Likely
Rain likely. Mostly cloudy, with a low around 57. South southwest wind 14 to 17 mph, with gusts as high as 26 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 |
|---|---|---|---|---|
| Overnight | 57°F | Light Rain Likely | 14 to 17 mph SSW | 59% |
| Wednesday | 61°F | Patchy Drizzle | 12 to 15 mph WSW | 12% |
| Wednesday Night | 46°F | Patchy Drizzle then Mostly Cloudy | 12 mph WSW | 10% |
| Thursday | 61°F | Mostly Cloudy | 10 to 15 mph WSW | 9% |
| Thursday Night | 41°F | Mostly Cloudy | 5 to 9 mph NW | 3% |
| Friday | 53°F | Partly Sunny | 13 mph NNW | 7% |
| Friday Night | 32°F | Partly Cloudy | 3 to 9 mph NNW | 0% |
| Saturday | 53°F | Sunny | 6 mph NNW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 3 mph WNW | 0% |
| Sunday | 58°F | Sunny | 2 to 9 mph WNW | 1% |
| Sunday Night | 32°F | Clear | 5 mph W | 1% |
| Monday | 62°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 37°F | Clear | 6 mph SW | 0% |
| Tuesday | 66°F | Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Zion, IL
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
Explore more for Mount Zion, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Decatur Ap, Il (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.