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St. Joseph, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for St. Joseph, a village in Champaign County, Illinois.

Today
87°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3pm. Mostly cloudy, with a high near 87. South southeast wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for St. Joseph

WhenTempForecastWindPrecip
Today 87°F Chance Showers And Thunderstorms 7 mph SSE 47%
Tonight 68°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 5 mph SSW 22%
Sunday 80°F Chance Showers And Thunderstorms 3 to 10 mph N 68%
Sunday Night 58°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 13 mph NE 64%
Monday 68°F Showers And Thunderstorms Likely 15 mph NE 69%
Monday Night 53°F Chance Rain Showers 10 to 15 mph NE 47%
Tuesday 66°F Chance Rain Showers 14 mph NE 35%
Tuesday Night 52°F Chance Showers And Thunderstorms then Mostly Cloudy 7 to 13 mph NNE 35%
Wednesday 68°F Partly Sunny 10 mph NNE 6%
Wednesday Night 53°F Partly Cloudy 5 to 9 mph NNE 6%
Thursday 70°F Partly Sunny 8 mph NNE 3%
Thursday Night 54°F Partly Cloudy 5 to 8 mph NNE 3%
Friday 73°F Mostly Sunny 5 to 9 mph NNE 2%
Friday Night 52°F Partly Cloudy 3 to 7 mph NE 2%

Forecast source: National Weather Service (api.weather.gov) for St. Joseph (40.115, -88.036). Updated through the day.

Growing snapshot for St. Joseph

Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
182 days
Hardiness zone
6a

More local growing data for St. Joseph: nearby ZIP 61873 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Ogden, Il (4.7 mi from St. Joseph). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.