Harman US

Highland, IL Weather & Growing Conditions

This Afternoon
72°F
Rain
Rain and a slight chance of thunderstorms. Cloudy, with a high near 72. South wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 72°F Rain 21 mph S 88%
Tonight 54°F Rain 9 to 18 mph S 98%
Wednesday 64°F Chance Rain Showers then Mostly Cloudy 8 to 15 mph W 12%
Wednesday Night 43°F Partly Cloudy 6 mph SW 0%
Thursday 66°F Sunny 5 to 13 mph W 0%
Thursday Night 43°F Mostly Cloudy 5 mph NW 4%
Friday 58°F Partly Sunny 5 to 12 mph NW 7%
Friday Night 38°F Partly Cloudy 2 to 7 mph N 1%
Saturday 56°F Mostly Sunny 5 mph NW 0%
Saturday Night 35°F Partly Cloudy 1 mph NW 0%
Sunday 61°F Sunny 1 to 8 mph W 7%
Sunday Night 35°F Mostly Clear 1 to 5 mph NW 5%
Monday 65°F Sunny 1 to 8 mph W 2%
Monday Night 39°F Mostly Clear 3 mph SW 1%

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 Nov 4, 2026.