Henry, IL Weather & Growing Conditions
Today
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm. Mostly cloudy, with a high near 82. Southeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Showers And Thunderstorms | 7 mph SE | 40% |
| Tonight | 67°F | Showers And Thunderstorms Likely | 5 mph WSW | 85% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 5 to 15 mph NNE | 70% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 50% |
| Monday | 66°F | Showers And Thunderstorms Likely | 16 mph ENE | 65% |
| Monday Night | 53°F | Chance Rain Showers | 12 to 16 mph NE | 44% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 21% |
| Tuesday Night | 50°F | Partly Cloudy | 7 to 14 mph NNE | 12% |
| Wednesday | 68°F | Mostly Sunny | 7 to 12 mph NNE | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 3 to 10 mph NNE | 1% |
| Thursday | 70°F | Mostly Sunny | 7 mph NNE | 4% |
| Thursday Night | 53°F | Partly Cloudy | 2 to 6 mph NE | 4% |
| Friday | 73°F | Mostly Sunny | 3 to 7 mph NE | 3% |
| Friday Night | 53°F | Partly Cloudy | 2 to 6 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Henry, IL
Last spring frost
Apr 20
First fall frost
Oct 17
Growing season
178 days
Hardiness zone
5b
Explore more for Henry, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Lacon, Il (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.