Highland, IL Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. South wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 2 mph S | 0% |
| Tonight | 66°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 89°F | Sunny | 0 to 5 mph S | 7% |
| Wednesday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph S | 62% |
| Thursday | 85°F | Showers And Thunderstorms Likely | 5 mph S | 74% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph SE | 39% |
| Friday | 85°F | Chance Showers And Thunderstorms | 3 mph SW | 39% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 2 mph S | 34% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 0 to 3 mph S | 34% |
| Saturday Night | 71°F | Mostly Clear | 5 mph S | 10% |
| Sunday | 90°F | Sunny | 5 to 9 mph S | 7% |
| Sunday Night | 73°F | Mostly Clear | 5 to 9 mph S | 5% |
| Monday | 91°F | Mostly Sunny | 5 to 9 mph S | 5% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms | 8 mph S | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Highland, IL
Last spring frost
Apr 6
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
6b
Explore more for Highland, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Carlyle Rsvr, Il (18.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.