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Blairsville, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Blairsville, a community in Williamson County, Illinois.

Tonight
72°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 10pm. Partly cloudy. Low around 72, with temperatures rising to around 74 overnight. South southeast wind around 2 mph. Chance of precipitation is 20%.

7-day forecast for Blairsville

WhenTempForecastWindPrecip
Tonight 72°F Slight Chance Showers And Thunderstorms then Partly Cloudy 2 mph SSE 22%
Saturday 97°F Sunny 2 to 6 mph SW 4%
Saturday Night 73°F Partly Cloudy 3 mph SSW 1%
Sunday 96°F Sunny 3 to 7 mph WSW 7%
Sunday Night 70°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 3 mph NNE 18%
Monday 87°F Chance Showers And Thunderstorms 3 to 9 mph N 47%
Monday Night 62°F Chance Showers And Thunderstorms 5 to 9 mph NNE 47%
Tuesday 75°F Slight Chance Showers And Thunderstorms then Partly Sunny 7 to 10 mph N 17%
Tuesday Night 57°F Partly Cloudy 5 to 10 mph N 7%
Wednesday 75°F Mostly Sunny 6 to 9 mph N 3%
Wednesday Night 56°F Partly Cloudy 2 to 7 mph NNE 2%
Thursday 75°F Mostly Sunny 3 to 8 mph N 2%
Thursday Night 58°F Partly Cloudy 2 to 7 mph NNE 2%
Friday 76°F Mostly Sunny 3 to 8 mph NNE 4%

Forecast source: National Weather Service (api.weather.gov) for Blairsville (37.811, -89.124). Updated through the day.

Growing snapshot for Blairsville

Last spring frost
Apr 9
First fall frost
Oct 22
Growing season
195 days
Hardiness zone
7a

More local growing data for Blairsville: nearby ZIP 62915 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Carbondale Sewage Plt, Il (4.4 mi from Blairsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.