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Garden Prairie, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Garden Prairie, a community in Boone County, Illinois.

Today
76°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers and thunderstorms likely. Cloudy, with a high near 76. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

7-day forecast for Garden Prairie

WhenTempForecastWindPrecip
Today 76°F Showers And Thunderstorms 5 to 10 mph SSE 96%
Tonight 61°F Showers And Thunderstorms 0 to 10 mph E 93%
Sunday 69°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 10 to 15 mph NE 55%
Sunday Night 54°F Slight Chance Rain Showers 10 to 15 mph NE 19%
Monday 64°F Chance Rain Showers 10 to 15 mph ENE 31%
Monday Night 49°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph NE 16%
Tuesday 62°F Mostly Cloudy 10 to 15 mph NE 14%
Tuesday Night 48°F Partly Cloudy 5 to 10 mph NE 11%
Wednesday 65°F Partly Sunny 5 to 15 mph NE 4%
Wednesday Night 49°F Partly Cloudy 0 to 10 mph NE 1%
Thursday 67°F Partly Sunny 5 to 10 mph NE 4%
Thursday Night 50°F Mostly Cloudy 0 to 5 mph NE 4%
Friday 71°F Partly Sunny 0 to 10 mph NE 3%
Friday Night 50°F Partly Cloudy 0 to 5 mph ENE 3%

Forecast source: National Weather Service (api.weather.gov) for Garden Prairie (42.254, -88.713). Updated through the day.

Growing snapshot for Garden Prairie

Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5b

More local growing data for Garden Prairie: nearby ZIP 61038 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Marengo, Il (6.7 mi from Garden Prairie). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.