Gilman, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Gilman, a city in Iroquois County, Illinois.

Overnight

61°F

Patchy Fog

Patchy fog. Mostly clear, with a low around 61. South wind around 5 mph.

7-day forecast for Gilman

When	Temp	Forecast	Wind	Precip
Overnight	61°F	Patchy Fog	5 mph S	0%
Tuesday	85°F	Patchy Fog then Mostly Sunny	0 to 5 mph S	1%
Tuesday Night	63°F	Partly Cloudy	0 to 5 mph S	0%
Wednesday	84°F	Partly Sunny then Slight Chance Showers And Thunderstorms	0 to 5 mph SSW	23%
Wednesday Night	66°F	Chance Showers And Thunderstorms then Showers And Thunderstorms	0 mph	85%
Thursday	81°F	Showers And Thunderstorms	0 to 5 mph SSW	85%
Thursday Night	63°F	Chance Showers And Thunderstorms	0 mph	50%
Friday	83°F	Mostly Sunny	0 mph	10%
Friday Night	64°F	Slight Chance Showers And Thunderstorms	0 mph	20%
Saturday	85°F	Mostly Sunny	0 to 5 mph SSW	13%
Saturday Night	68°F	Mostly Clear	0 to 5 mph SSW	12%
Sunday	87°F	Sunny	5 to 10 mph SSW	11%
Sunday Night	70°F	Slight Chance Showers And Thunderstorms	5 mph SSW	22%
Monday	87°F	Slight Chance Showers And Thunderstorms	5 to 10 mph SSW	22%

Forecast source: National Weather Service (api.weather.gov) for Gilman (40.761, -88.001). Updated through the day.

Growing snapshot for Gilman

Last spring frost

Apr 25

First fall frost

Oct 20

Growing season

175 days

Hardiness zone

More local growing data for Gilman: nearby ZIP 60938 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Ashkum Beaverville Buckley Cissna Park Clifton Crescent City Danforth Donovan Iroquois Loda Martinton Milford Onarga Papineau Sheldon Thawville Watseka Wellington Woodland

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Climate data from the nearest NOAA station, Piper City, Il (10.4 mi from Gilman). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.