Fillmore, IL Weather & Growing Conditions
Tonight
56°F
Rain
Rain and a slight chance of thunderstorms. Cloudy, with a low around 56. South wind 9 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Rain | 9 to 16 mph S | 97% |
| Wednesday | 62°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 13 mph SW | 17% |
| Wednesday Night | 41°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 64°F | Sunny | 5 to 12 mph W | 0% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 7% |
| Friday | 57°F | Partly Sunny | 5 to 9 mph NW | 8% |
| Friday Night | 36°F | Partly Cloudy | 2 to 6 mph N | 3% |
| Saturday | 55°F | Partly Sunny | 3 mph NW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 60°F | Sunny | 1 to 6 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 3 mph W | 4% |
| Monday | 64°F | Sunny | 2 to 9 mph W | 2% |
| Monday Night | 37°F | Mostly Clear | 3 mph SW | 2% |
| Tuesday | 67°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fillmore, IL
Last spring frost
Apr 15
First fall frost
Oct 19
Growing season
185 days
Hardiness zone
6b
Explore more for Fillmore, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Ramsey, Il (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.