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Westfield, IL Weather & Growing Conditions

Today
91°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 11am and 4pm. Mostly sunny, with a high near 91. Southwest wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 91°F Chance Showers And Thunderstorms 8 mph SW 40%
Tonight 70°F Mostly Cloudy 3 to 7 mph S 9%
Sunday 86°F Mostly Sunny then Chance Showers And Thunderstorms 5 to 10 mph NNW 36%
Sunday Night 61°F Chance Showers And Thunderstorms 13 mph NE 61%
Monday 72°F Showers And Thunderstorms Likely 14 mph NE 68%
Monday Night 55°F Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 12 to 16 mph NE 49%
Tuesday 68°F Slight Chance Showers And Thunderstorms 14 mph NNE 28%
Tuesday Night 53°F Chance Showers And Thunderstorms then Mostly Cloudy 8 to 14 mph NNE 28%
Wednesday 70°F Mostly Sunny 10 mph NNE 7%
Wednesday Night 54°F Partly Cloudy 6 to 9 mph N 4%
Thursday 71°F Mostly Sunny 9 mph N 2%
Thursday Night 55°F Partly Cloudy 5 to 8 mph NNE 4%
Friday 74°F Mostly Sunny 9 mph NNE 2%
Friday Night 54°F Mostly Clear 8 mph NE 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Westfield, IL

Last spring frost
Apr 15
First fall frost
Oct 23
Growing season
187 days
Hardiness zone
6a

Explore more for Westfield, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Charleston, Il (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.