Gilman, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gilman, a city in Iroquois County, Illinois.
This Afternoon
75°F
Chance Rain
A chance of rain. Partly sunny. High near 75, with temperatures falling to around 72 in the afternoon. South wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
7-day forecast for Gilman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Rain | 20 mph S | 27% |
| Tonight | 59°F | Rain | 15 to 20 mph SSE | 80% |
| Wednesday | 64°F | Chance Rain then Mostly Cloudy | 10 to 15 mph SSW | 42% |
| Wednesday Night | 46°F | Mostly Cloudy | 10 mph SW | 5% |
| Thursday | 62°F | Partly Sunny | 10 to 15 mph WSW | 5% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance Rain | 0 to 5 mph WNW | 24% |
| Friday | 56°F | Slight Chance Rain then Mostly Cloudy | 5 to 10 mph NNW | 22% |
| Friday Night | 34°F | Mostly Cloudy | 0 to 5 mph NNW | 9% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph WNW | 4% |
| Saturday Night | 31°F | Partly Cloudy | 0 mph | 3% |
| Sunday | 60°F | Mostly Sunny | 0 to 5 mph W | 10% |
| Sunday Night | 32°F | Mostly Clear | 0 to 5 mph WNW | 10% |
| Monday | 64°F | Sunny | 0 to 10 mph WSW | 4% |
| Monday Night | 37°F | Mostly Clear | 5 mph WSW | 3% |
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
5b
More local growing data for Gilman: nearby ZIP 60938 weather · frost dates · planting calendar · Illinois frost dates
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Iroquois
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Milford
Onarga
Papineau
Sheldon
Thawville
Watseka
Wellington
Woodland
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 Nov 3, 2026.