Ohio, IL Weather & Growing Conditions
Tonight
65°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. East wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph E | 34% |
| Saturday | 81°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 68% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 79% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 79% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 15 mph NE | 71% |
| Monday | 65°F | Rain Showers Likely | 15 mph NE | 57% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 20 mph NE | 40% |
| Tuesday | 64°F | Chance Rain Showers | 15 mph NE | 36% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 15 mph NE | 6% |
| Wednesday | 67°F | Partly Sunny | 10 mph NE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Thursday | 70°F | Mostly Sunny | 5 mph N | 4% |
| Thursday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ohio, IL
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
172 days
Hardiness zone
5b
Explore more for Ohio, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Walnut, Il (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.