Franklin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Franklin, a village in Morgan County, Illinois.
Overnight
63°F
Clear
Clear, with a low around 63. South southeast wind around 5 mph.
7-day forecast for Franklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 5 mph SSE | 0% |
| Tuesday | 87°F | Sunny | 6 mph S | 0% |
| Tuesday Night | 68°F | Mostly Clear | 6 mph SSE | 1% |
| Wednesday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 8 mph S | 22% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SSE | 79% |
| Thursday | 83°F | Showers And Thunderstorms | 6 mph SSW | 79% |
| 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 | 6 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% |
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 Aug 4, 2026.