Harman US

Westfield, IL Weather & Growing Conditions

This Afternoon
91°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny, with a high near 91. West southwest wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 91°F Slight Chance Showers And Thunderstorms 6 mph WSW 18%
Tonight 70°F Mostly Cloudy 3 to 7 mph SSE 14%
Sunday 88°F Partly Sunny then Chance Showers And Thunderstorms 6 to 10 mph NW 26%
Sunday Night 61°F Chance Showers And Thunderstorms 8 to 13 mph NNE 42%
Monday 73°F Showers And Thunderstorms Likely 9 to 13 mph NE 65%
Monday Night 56°F Chance Rain Showers 13 mph NE 47%
Tuesday 69°F Chance Rain Showers 14 mph NE 33%
Tuesday Night 54°F Mostly Cloudy 7 to 14 mph NNE 13%
Wednesday 70°F Partly Sunny 10 mph N 13%
Wednesday Night 54°F Mostly Cloudy 5 to 10 mph N 1%
Thursday 73°F Partly Sunny 8 mph N 1%
Thursday Night 56°F Mostly Cloudy 3 to 7 mph NNE 3%
Friday 75°F Partly Sunny 5 to 8 mph NNE 11%
Friday Night 54°F Partly Cloudy 7 mph NE 11%

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 20, 2026.