Seymour, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Seymour, a community in Champaign County, Illinois.

Overnight

58°F

Light Rain

Rain. Cloudy, with a low around 58. South wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Seymour

When	Temp	Forecast	Wind	Precip
Overnight	58°F	Light Rain	17 mph S	94%
Wednesday	62°F	Slight Chance Drizzle	13 to 16 mph SW	24%
Wednesday Night	45°F	Slight Chance Drizzle then Mostly Cloudy	13 mph SW	20%
Thursday	61°F	Mostly Cloudy	13 to 17 mph WSW	14%
Thursday Night	42°F	Mostly Cloudy then Slight Chance Light Rain	9 mph NW	19%
Friday	53°F	Mostly Cloudy	10 to 14 mph NNW	10%
Friday Night	33°F	Partly Cloudy	5 to 12 mph NNW	0%
Saturday	53°F	Sunny	7 mph NW	0%
Saturday Night	32°F	Partly Cloudy	5 mph WNW	1%
Sunday	59°F	Sunny	5 to 10 mph WNW	2%
Sunday Night	33°F	Clear	6 mph W	0%
Monday	63°F	Sunny	3 to 9 mph SW	0%
Monday Night	38°F	Clear	7 mph WSW	0%
Tuesday	66°F	Sunny	7 mph WNW	1%

Forecast source: National Weather Service (api.weather.gov) for Seymour (40.107, -88.427). Updated through the day.

Growing snapshot for Seymour

Last spring frost

Apr 23

First fall frost

Oct 13

Growing season

170 days

Hardiness zone

More local growing data for Seymour: nearby ZIP 61875 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Bondville Broadlands Champaign Dewey Fisher Foosland Gifford Homer Ivesdale Lake of the Woods Longview Ludlow Mahomet Ogden Penfield Pesotum Philo Rantoul Royal Sadorus Savoy Sidney St. Joseph Thomasboro Tolono Urbana

All Illinois locations ›

Climate data from the nearest NOAA station, Champaign 9 Sw, Il (4.2 mi from Seymour). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.