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Oglesby, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Oglesby, a city in Lasalle County, Illinois.

Tonight
66°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Oglesby

WhenTempForecastWindPrecip
Tonight 66°F Mostly Cloudy then Chance Showers And Thunderstorms 10 mph ESE 26%
Saturday 83°F Showers And Thunderstorms Likely 5 to 10 mph SE 58%
Saturday Night 66°F Showers And Thunderstorms Likely 5 mph WNW 79%
Sunday 72°F Showers And Thunderstorms 10 to 15 mph NE 79%
Sunday Night 58°F Showers And Thunderstorms Likely 15 mph NE 71%
Monday 66°F Showers And Thunderstorms Likely 15 mph ENE 63%
Monday Night 53°F Chance Rain Showers 10 to 15 mph NE 38%
Tuesday 65°F Chance Rain Showers 10 to 15 mph NE 28%
Tuesday Night 52°F Mostly Cloudy 5 to 10 mph NNE 7%
Wednesday 68°F Partly Sunny 5 to 10 mph NNE 5%
Wednesday Night 52°F Partly Cloudy 0 to 10 mph NNE 5%
Thursday 70°F Mostly Sunny 0 to 5 mph NNE 2%
Thursday Night 54°F Partly Cloudy 0 to 5 mph NNE 3%
Friday 72°F Mostly Sunny 0 to 5 mph NNE 3%

Forecast source: National Weather Service (api.weather.gov) for Oglesby (41.293, -89.071). Updated through the day.

Growing snapshot for Oglesby

Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b

More local growing data for Oglesby: nearby ZIP 61348 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Peru, Il (5.8 mi from Oglesby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.