Walnut, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Walnut, a village in Bureau County, Illinois.

This Afternoon

69°F

Showers And Thunderstorms

Showers and thunderstorms. Mostly cloudy, with a high near 69. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%.

7-day forecast for Walnut

When	Temp	Forecast	Wind	Precip
This Afternoon	69°F	Showers And Thunderstorms	15 to 20 mph S	95%
Tonight	54°F	Showers And Thunderstorms	15 mph S	84%
Wednesday	57°F	Chance Rain Showers then Mostly Cloudy	15 mph SW	28%
Wednesday Night	46°F	Slight Chance Rain Showers then Mostly Cloudy	10 to 15 mph SW	16%
Thursday	55°F	Chance Rain Showers	10 to 15 mph W	45%
Thursday Night	43°F	Chance Rain Showers	5 to 10 mph NW	31%
Friday	52°F	Slight Chance Rain Showers	5 to 10 mph N	15%
Friday Night	35°F	Partly Cloudy	0 to 5 mph N	4%
Saturday	52°F	Mostly Sunny	0 to 5 mph W	6%
Saturday Night	35°F	Partly Cloudy	0 to 5 mph W	5%
Sunday	57°F	Sunny	5 to 10 mph W	9%
Sunday Night	36°F	Mostly Clear	0 to 5 mph W	2%
Monday	62°F	Sunny	5 to 10 mph SW	1%
Monday Night	41°F	Mostly Clear	5 mph W	0%

Forecast source: National Weather Service (api.weather.gov) for Walnut (41.557, -89.591). Updated through the day.

Growing snapshot for Walnut

Last spring frost

Apr 24

First fall frost

Oct 14

Growing season

172 days

Hardiness zone

More local growing data for Walnut: nearby ZIP 61376 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Walnut, Il (1.5 mi from Walnut). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.