Hanover, IL Weather & Growing Conditions
Tonight
45°F
Areas Of Drizzle
Areas of drizzle. Cloudy, with a low around 45. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Areas Of Drizzle | 10 mph SW | 27% |
| Thursday | 51°F | Chance Rain Showers | 10 mph NW | 35% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Cloudy | 5 to 10 mph N | 15% |
| Friday | 47°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 28°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 58°F | Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 39°F | Clear | 0 to 5 mph W | 0% |
| Tuesday | 60°F | Sunny | 0 mph | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 0 mph | 1% |
| Veterans Day | 59°F | Mostly Sunny | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hanover, IL
Last spring frost
May 1
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
Explore more for Hanover, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Elizabeth, Il (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.