North Henderson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Henderson, a village in Mercer County, Illinois.
Tonight
51°F
Mostly Cloudy
Mostly cloudy. Low around 51, with temperatures rising to around 54 overnight. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for North Henderson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Cloudy | 10 to 15 mph SW | 11% |
| Wednesday | 57°F | Slight Chance Rain Showers | 15 mph SW | 22% |
| Wednesday Night | 45°F | Mostly Cloudy | 15 mph SW | 9% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 34% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NW | 21% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 6% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 35°F | Clear | 0 to 5 mph W | 1% |
| Monday | 63°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 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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Millersburg
New Boston
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Reynolds
Seaton
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.