Hardin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hardin, a village in Calhoun County, Illinois.
Tonight
72°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Hardin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SE | 17% |
| Saturday | 95°F | Partly Sunny | 7 mph SW | 7% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Rain Showers | 3 mph SW | 15% |
| Sunday | 88°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph NW | 45% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph NE | 68% |
| Monday | 74°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 69% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 6 to 9 mph N | 53% |
| Tuesday | 69°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 22% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 to 8 mph N | 4% |
| Wednesday | 72°F | Mostly Sunny | 7 mph N | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 6 mph N | 1% |
| Thursday | 74°F | Mostly Sunny | 2 to 6 mph N | 4% |
| Thursday Night | 56°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 74°F | Mostly Sunny | 2 to 6 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Hardin (39.159, -90.623). Updated through the day.
Growing snapshot for Hardin
Last spring frost
Apr 20
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6b
More local growing data for Hardin: nearby ZIP 62047 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Elsberry 1 S, Mo (8.7 mi from Hardin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.