Mineral, IL Weather & Growing Conditions
Tonight
66°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1am. Mostly cloudy. Low around 66, with temperatures rising to around 68 overnight. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph SE | 41% |
| Saturday | 83°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 61% |
| Saturday Night | 64°F | Showers And Thunderstorms | 5 mph N | 83% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 5 to 15 mph NE | 83% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 66% |
| Monday | 66°F | Showers And Thunderstorms Likely | 15 mph NE | 60% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 44% |
| Tuesday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 42% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 15 mph NE | 4% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Thursday | 71°F | Mostly Sunny | 5 mph N | 4% |
| Thursday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mineral, IL
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
5b
Explore more for Mineral, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Kewanee 1 E, Il (13.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.