Harman US

Forrest, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Forrest, a village in Livingston County, Illinois.

This Afternoon
64°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 64, with temperatures falling to around 56 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.

7-day forecast for Forrest

WhenTempForecastWindPrecip
This Afternoon 64°F Slight Chance Rain Showers 15 mph WSW 8%
Tonight 44°F Slight Chance Rain Showers then Cloudy 10 to 15 mph SW 3%
Thursday 57°F Mostly Cloudy then Chance Rain 10 to 15 mph WSW 36%
Thursday Night 37°F Chance Rain then Cloudy 5 to 10 mph NW 42%
Friday 51°F Partly Sunny 10 mph NNW 4%
Friday Night 29°F Mostly Clear 0 to 5 mph NNW 0%
Saturday 53°F Sunny 0 to 5 mph NW 0%
Saturday Night 29°F Mostly Clear 0 to 5 mph WNW 0%
Sunday 60°F Sunny 0 to 10 mph W 0%
Sunday Night 32°F Mostly Clear 0 to 5 mph W 0%
Monday 64°F Sunny 0 to 10 mph SW 0%
Monday Night 37°F Clear 5 mph WSW 0%
Tuesday 65°F Sunny 0 to 5 mph WNW 1%
Tuesday Night 36°F Partly Cloudy 0 mph 2%

Forecast source: National Weather Service (api.weather.gov) for Forrest (40.751, -88.410). Updated through the day.

Growing snapshot for Forrest

Last spring frost
Apr 25
First fall frost
Oct 20
Growing season
175 days
Hardiness zone
6a

More local growing data for Forrest: nearby ZIP 61741 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

All Illinois locations ›

Climate data from the nearest NOAA station, Piper City, Il (11.2 mi from Forrest). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.