Nelson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nelson, a village in Lee County, Illinois.
Tonight
55°F
Rain
Rain. Cloudy. Low around 55, with temperatures rising to around 58 overnight. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Nelson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain | 10 to 15 mph SSE | 82% |
| Wednesday | 58°F | Chance Rain then Chance Rain Showers | 15 mph SSW | 31% |
| Wednesday Night | 46°F | Chance Rain Showers | 10 to 15 mph SW | 26% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph WSW | 51% |
| Thursday Night | 41°F | Chance Rain Showers | 5 to 10 mph NW | 28% |
| Friday | 52°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph N | 15% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph NNW | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WNW | 3% |
| Saturday Night | 33°F | Partly Cloudy | 0 mph | 4% |
| Sunday | 58°F | Mostly Sunny | 0 to 10 mph W | 12% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 4% |
| Monday | 62°F | Sunny | 0 to 10 mph SW | 2% |
| Monday Night | 38°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 5 mph WNW | 0% |
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
5b
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
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 4, 2026.