Gilman, IL Weather & Growing Conditions
Tonight
59°F
Rain Showers
Rain showers. Cloudy. Low around 59, with temperatures rising to around 61 overnight. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Rain Showers | 15 to 20 mph S | 80% |
| Wednesday | 64°F | Chance Rain Showers 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 Showers | 0 to 5 mph WNW | 24% |
| Friday | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NNW | 22% |
| Friday Night | 33°F | Mostly Cloudy | 0 to 5 mph NNW | 9% |
| Saturday | 55°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 | 31°F | Mostly Clear | 0 to 5 mph WNW | 10% |
| Monday | 64°F | Sunny | 0 to 10 mph WSW | 4% |
| Monday Night | 36°F | Mostly Clear | 5 mph WSW | 3% |
| Tuesday | 66°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gilman, IL
Last spring frost
Apr 25
First fall frost
Oct 20
Growing season
175 days
Hardiness zone
5b
Explore more for Gilman, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Piper City, Il (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.