Henry, IL Weather & Growing Conditions
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. South southwest wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 5 to 8 mph SSW | 0% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph S | 23% |
| Wednesday | 81°F | Chance Showers And Thunderstorms | 6 mph SW | 52% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 5 mph N | 86% |
| Thursday | 79°F | Showers And Thunderstorms Likely | 5 mph SSE | 69% |
| Thursday Night | 63°F | Partly Cloudy | 3 mph ESE | 14% |
| Friday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph SSE | 18% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph S | 18% |
| Saturday | 85°F | Sunny | 3 to 7 mph SSW | 8% |
| Saturday Night | 70°F | Mostly Clear | 3 to 9 mph SSW | 8% |
| Sunday | 87°F | Sunny | 9 to 13 mph SSW | 8% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph SSW | 28% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 12 mph SSW | 28% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 12 mph SW | 35% |
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 Aug 4, 2026.