Union Hill, IL Weather & Growing Conditions
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 5 mph S | 4% |
| Tonight | 66°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Wednesday | 83°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph WSW | 86% |
| Thursday | 81°F | Showers And Thunderstorms | 0 to 5 mph SSW | 82% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 mph | 44% |
| Friday | 83°F | Mostly Sunny | 0 mph | 6% |
| Friday Night | 64°F | Mostly Clear | 0 mph | 12% |
| Saturday | 85°F | Mostly Sunny | 0 to 5 mph SSW | 11% |
| Saturday Night | 69°F | Mostly Clear | 0 to 5 mph SSW | 11% |
| Sunday | 88°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 27% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 27% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 mph SW | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union Hill, IL
Last spring frost
Apr 27
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
5b
Explore more for Union Hill, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Dwight, Il (13.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.