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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

WhenTempForecastWindPrecip
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

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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.