Franklin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Franklin, a village in Morgan County, Illinois.
Overnight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South southeast wind around 7 mph.
7-day forecast for Franklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Partly Cloudy | 7 mph SSE | 4% |
| Saturday | 93°F | Partly Sunny | 7 mph SSW | 8% |
| Saturday Night | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 2 to 8 mph N | 46% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 72% |
| Monday | 71°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 72% |
| Monday Night | 55°F | Chance Rain Showers | 8 to 13 mph NE | 35% |
| Tuesday | 67°F | Slight Chance Rain Showers | 13 mph NE | 24% |
| Tuesday Night | 51°F | Mostly Cloudy | 6 to 12 mph NNE | 8% |
| Wednesday | 71°F | Mostly Sunny | 7 to 10 mph NNE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 to 8 mph NNE | 1% |
| Thursday | 73°F | Mostly Sunny | 5 to 8 mph NNE | 3% |
| Thursday Night | 55°F | Partly Cloudy | 3 to 7 mph NNE | 3% |
| Friday | 75°F | Mostly Sunny | 3 to 8 mph NE | 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.