Hanover, IL Weather & Growing Conditions
Overnight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 55 overnight. South wind around 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 10 mph S | 14% |
| Wednesday | 55°F | Chance Rain Showers | 10 to 15 mph SW | 44% |
| Wednesday Night | 45°F | Chance Rain Showers | 10 to 15 mph SW | 28% |
| Thursday | 53°F | Rain Showers Likely | 10 mph W | 61% |
| Thursday Night | 39°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 20% |
| Friday | 48°F | Partly Sunny | 5 to 10 mph N | 3% |
| Friday Night | 30°F | Mostly Clear | 0 to 5 mph N | 1% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 56°F | Sunny | 5 mph W | 3% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 60°F | Sunny | 0 to 5 mph NW | 0% |
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 4, 2026.