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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.

Overnight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South southeast wind around 7 mph.

7-day forecast for Franklin

WhenTempForecastWindPrecip
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

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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.