Franklin, IL Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 6 mph S | 0% |
| Tonight | 68°F | Mostly Clear | 6 mph SSE | 1% |
| Wednesday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 mph S | 22% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SSE | 80% |
| Thursday | 83°F | Showers And Thunderstorms | 6 mph SSW | 80% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph SSE | 18% |
| Friday | 85°F | Partly Sunny | 3 mph SSW | 8% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 3 mph S | 25% |
| Saturday | 87°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph SSW | 25% |
| Saturday Night | 70°F | Mostly Clear | 3 to 8 mph S | 8% |
| Sunday | 90°F | Sunny | 8 to 12 mph SSW | 4% |
| Sunday Night | 71°F | Mostly Clear | 9 mph S | 8% |
| Monday | 90°F | Mostly Sunny | 10 mph SSW | 10% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 9 mph SSW | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Franklin, IL
Last spring frost
Apr 17
First fall frost
Oct 21
Growing season
186 days
Hardiness zone
6a
Explore more for Franklin, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Jacksonville 2, Il (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.