Franklin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Franklin, a village in Morgan County, Illinois.
Tonight
72°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southeast wind around 8 mph. Chance of precipitation is 20%.
7-day forecast for Franklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 8 mph SE | 15% |
| Saturday | 93°F | Partly Sunny | 9 mph SW | 7% |
| Saturday Night | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 mph SSW | 26% |
| Sunday | 86°F | Showers And Thunderstorms Likely | 2 to 8 mph NW | 56% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 to 10 mph NE | 68% |
| Monday | 73°F | Showers And Thunderstorms Likely | 7 to 13 mph NE | 68% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 8 to 13 mph NE | 46% |
| Tuesday | 68°F | Chance Rain Showers then Mostly Cloudy | 12 mph NNE | 28% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 12 mph NNE | 4% |
| Wednesday | 72°F | Mostly Sunny | 6 to 9 mph NNE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph NNE | 0% |
| Thursday | 73°F | Mostly Sunny | 3 to 7 mph NNE | 3% |
| Thursday Night | 55°F | Partly Cloudy | 6 mph NNE | 4% |
| Friday | 74°F | Mostly Sunny | 3 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Franklin (39.621, -90.048). Updated through the day.
Growing snapshot for Franklin
Last spring frost
Apr 17
First fall frost
Oct 21
Growing season
186 days
Hardiness zone
6a
More local growing data for Franklin: nearby ZIP 62638 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alexander
Chapin
Concord
Jacksonville
Lynnville
Meredosia
Merritt
Murrayville
Riggston
South Jacksonville
Waverly
Woodson
Climate data from the nearest NOAA station, Jacksonville 2, Il (10.6 mi from Franklin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.