Nelson, IL Weather & Growing Conditions

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

This Afternoon

58°F

Slight Chance Rain Showers

A slight chance of drizzle before 4pm, then a slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 58, with temperatures falling to around 54 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

7-day forecast for Nelson

When	Temp	Forecast	Wind	Precip
This Afternoon	58°F	Slight Chance Rain Showers	10 to 15 mph WSW	10%
Tonight	44°F	Slight Chance Rain Showers then Cloudy	10 to 15 mph SW	13%
Thursday	55°F	Chance Rain	10 to 15 mph WNW	36%
Thursday Night	37°F	Slight Chance Rain then Mostly Cloudy	5 to 10 mph NNW	16%
Friday	49°F	Mostly Sunny	5 to 10 mph N	0%
Friday Night	28°F	Mostly Clear	0 to 5 mph NNW	0%
Saturday	51°F	Sunny	0 to 5 mph NW	0%
Saturday Night	31°F	Mostly Clear	0 mph	0%
Sunday	58°F	Sunny	0 to 10 mph W	1%
Sunday Night	33°F	Mostly Clear	0 to 5 mph WSW	0%
Monday	62°F	Sunny	0 to 10 mph SW	0%
Monday Night	38°F	Clear	0 to 5 mph WSW	0%
Tuesday	62°F	Sunny	0 to 5 mph WNW	1%
Tuesday Night	37°F	Partly Cloudy	0 mph	2%

Forecast source: National Weather Service (api.weather.gov) for Nelson (41.796, -89.607). Updated through the day.

Growing snapshot for Nelson

Last spring frost

Apr 24

First fall frost

Oct 14

Growing season

172 days

Hardiness zone

More local growing data for Nelson: nearby ZIP 61042 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Amboy Ashton Compton Dixon Franklin Grove Grand Detour Harmon Lee Lee Center Lost Nation Nachusa Paw Paw Steward Sublette West Brooklyn

All Illinois locations ›

Climate data from the nearest NOAA station, Walnut, Il (9.5 mi from Nelson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.