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Oak Run, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Oak Run, a community in Knox County, Illinois.

Today
84°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84. Southeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Oak Run

WhenTempForecastWindPrecip
Today 84°F Chance Showers And Thunderstorms 7 mph SE 28%
Tonight 67°F Showers And Thunderstorms Likely 2 to 6 mph WSW 87%
Sunday 73°F Showers And Thunderstorms Likely 3 to 14 mph NNE 72%
Sunday Night 58°F Chance Showers And Thunderstorms 12 to 15 mph NE 57%
Monday 65°F Showers And Thunderstorms Likely 15 mph ENE 63%
Monday Night 53°F Chance Rain Showers 10 to 15 mph NE 49%
Tuesday 63°F Chance Rain Showers 14 mph NE 31%
Tuesday Night 49°F Partly Cloudy 6 to 12 mph NNE 8%
Wednesday 67°F Mostly Sunny 7 to 10 mph NNE 3%
Wednesday Night 52°F Partly Cloudy 2 to 7 mph NNE 1%
Thursday 69°F Partly Sunny 6 mph NNE 6%
Thursday Night 54°F Partly Cloudy 5 mph NE 5%
Friday 73°F Mostly Sunny 3 to 7 mph NE 3%
Friday Night 54°F Partly Cloudy 5 mph ENE 3%

Forecast source: National Weather Service (api.weather.gov) for Oak Run (40.960, -90.130). Updated through the day.

Growing snapshot for Oak Run

Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
5b

More local growing data for Oak Run: nearby ZIP 61428 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Knoxville, Il (9.4 mi from Oak Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.