Fillmore, IL Weather & Growing Conditions
Overnight
64°F
Clear
Clear, with a low around 64. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 0 mph | 0% |
| Tuesday | 85°F | Sunny | 2 mph S | 0% |
| Tuesday Night | 64°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 87°F | Sunny | 1 to 5 mph S | 7% |
| Wednesday Night | 68°F | Slight Chance Showers And Thunderstorms | 3 mph S | 61% |
| Thursday | 83°F | Showers And Thunderstorms | 5 mph SW | 76% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms | 0 to 3 mph S | 42% |
| Friday | 84°F | Chance Showers And Thunderstorms then Partly Sunny | 3 mph SW | 33% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 2 mph SW | 25% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 25% |
| Saturday Night | 70°F | Mostly Clear | 5 mph S | 13% |
| Sunday | 88°F | Sunny | 5 to 9 mph SW | 7% |
| Sunday Night | 72°F | Mostly Clear | 8 mph S | 5% |
| Monday | 90°F | Mostly Sunny | 8 mph SW | 8% |
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 Aug 4, 2026.