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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.

This Afternoon
85°F
Cloudy
Cloudy, with a high near 85. South wind around 8 mph.

7-day forecast for Green Valley

WhenTempForecastWindPrecip
This Afternoon 85°F Cloudy 8 mph S 14%
Tonight 68°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 6 mph SSW 22%
Sunday 79°F Chance Showers And Thunderstorms 5 to 12 mph NNE 35%
Sunday Night 60°F Chance Showers And Thunderstorms 9 to 14 mph NE 51%
Monday 67°F Showers And Thunderstorms Likely 13 mph ENE 70%
Monday Night 54°F Chance Rain Showers 12 mph ENE 51%
Tuesday 65°F Chance Rain Showers 12 mph NE 51%
Tuesday Night 51°F Mostly Cloudy 6 to 10 mph NNE 9%
Wednesday 68°F Partly Sunny 6 to 9 mph NNE 3%
Wednesday Night 53°F Partly Cloudy 2 to 8 mph NNE 0%
Thursday 71°F Mostly Sunny 6 mph NNE 2%
Thursday Night 56°F Slight Chance Rain Showers 1 to 5 mph NE 15%
Friday 75°F Partly Sunny 2 to 6 mph NE 11%
Friday Night 55°F Partly Cloudy 5 mph NE 10%

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.