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Green Valley, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Green Valley, a village in Tazewell County, Illinois.

Tonight
70°F
Partly Cloudy
Partly cloudy, with a low around 70. East southeast wind around 10 mph, with gusts as high as 18 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Green Valley

WhenTempForecastWindPrecip
Tonight 70°F Partly Cloudy 10 mph ESE 5%
Saturday 89°F Slight Chance Rain Showers then Mostly Cloudy 8 mph S 19%
Saturday Night 68°F Chance Showers And Thunderstorms 5 to 8 mph SE 47%
Sunday 79°F Rain Showers Likely 2 to 12 mph NNE 64%
Sunday Night 59°F Showers And Thunderstorms Likely 13 mph NE 65%
Monday 68°F Showers And Thunderstorms Likely 13 mph ENE 65%
Monday Night 54°F Chance Showers And Thunderstorms 10 to 14 mph NE 46%
Tuesday 66°F Chance Rain Showers then Mostly Cloudy 12 mph NE 26%
Tuesday Night 51°F Mostly Cloudy 5 to 10 mph NNE 5%
Wednesday 69°F Partly Sunny 8 mph NNE 4%
Wednesday Night 53°F Partly Cloudy 2 to 7 mph NNE 1%
Thursday 70°F Mostly Sunny 6 mph NNE 2%
Thursday Night 55°F Partly Cloudy 5 mph NNE 3%
Friday 73°F Mostly Sunny 3 to 7 mph NNE 4%

Forecast source: National Weather Service (api.weather.gov) for Green Valley (40.407, -89.644). Updated through the day.

Growing snapshot for Green Valley

Last spring frost
Apr 17
First fall frost
Oct 18
Growing season
182 days
Hardiness zone
6a

More local growing data for Green Valley: nearby ZIP 61534 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Mason City 4Se, Il (17.3 mi from Green Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.