Hanover, IL Weather & Growing Conditions
Today
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 33% |
| Tonight | 65°F | Showers And Thunderstorms Likely | 5 mph NW | 83% |
| Wednesday | 74°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 65% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 56% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 24% |
| Thursday Night | 60°F | Mostly Clear | 0 mph | 4% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SE | 5% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 84°F | Sunny | 5 mph SW | 10% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 mph S | 23% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 23% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 mph S | 41% |
| Monday | 84°F | Chance Showers And Thunderstorms | 5 mph S | 40% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph NE | 41% |
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 Aug 4, 2026.