North Henderson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Henderson, a village in Mercer County, Illinois.
This Afternoon
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 68, with temperatures falling to around 66 in the afternoon. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for North Henderson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms Likely | 15 mph S | 71% |
| Tonight | 51°F | Showers And Thunderstorms | 10 to 15 mph S | 77% |
| Wednesday | 56°F | Chance Rain Showers | 15 mph SW | 25% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 to 15 mph SW | 9% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 27% |
| Thursday Night | 42°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 31% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 13% |
| Friday Night | 34°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph NW | 3% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 3% |
| Monday | 63°F | Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for North Henderson (41.090, -90.475). Updated through the day.
Growing snapshot for North Henderson
Last spring frost
Apr 20
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b
More local growing data for North Henderson: nearby ZIP 61466 weather · frost dates · planting calendar · Illinois frost dates
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Reynolds
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Sherrard
Viola
Windsor
Climate data from the nearest NOAA station, Galesburg, Il (12.4 mi from North Henderson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.