Franklin, IL Weather & Growing Conditions
Overnight
54°F
Slight Chance Light Rain
A slight chance of rain before 4am. Mostly cloudy, with a low around 54. Southwest wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Slight Chance Light Rain | 12 mph SW | 19% |
| Wednesday | 59°F | Patchy Drizzle | 13 to 16 mph WSW | 10% |
| Wednesday Night | 46°F | Patchy Drizzle then Mostly Cloudy | 12 mph WSW | 10% |
| Thursday | 61°F | Partly Sunny | 10 to 14 mph W | 6% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph NW | 6% |
| Friday | 54°F | Partly Sunny | 10 mph NNW | 5% |
| Friday Night | 32°F | Partly Cloudy | 1 to 7 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 1 to 5 mph NNW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 2 mph WNW | 1% |
| Sunday | 59°F | Sunny | 2 to 7 mph WNW | 2% |
| Sunday Night | 33°F | Clear | 3 mph W | 0% |
| Monday | 64°F | Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 38°F | Clear | 5 mph SW | 0% |
| Tuesday | 66°F | Sunny | 5 mph WNW | 1% |
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 Nov 4, 2026.