Bunker Hill, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bunker Hill, a city in Macoupin County, Illinois.
This Afternoon
72°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 72, with temperatures falling to around 66 in the afternoon. South wind 17 to 23 mph, with gusts as high as 35 mph. Chance of precipitation is 100%.
7-day forecast for Bunker Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Rain | 17 to 23 mph S | 97% |
| Tonight | 52°F | Rain | 9 to 17 mph S | 95% |
| Wednesday | 62°F | Chance Rain Showers then Mostly Cloudy | 8 to 14 mph SW | 12% |
| Wednesday Night | 41°F | Partly Cloudy | 7 mph SW | 0% |
| Thursday | 64°F | Sunny | 6 to 12 mph W | 1% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph NW | 9% |
| Friday | 57°F | Mostly Cloudy | 6 to 10 mph NW | 5% |
| Friday Night | 36°F | Partly Cloudy | 2 to 7 mph N | 2% |
| Saturday | 55°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 2 to 8 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bunker Hill (39.041, -89.951). Updated through the day.
Growing snapshot for Bunker Hill
Last spring frost
Apr 4
First fall frost
Nov 5
Growing season
214 days
Hardiness zone
6b
More local growing data for Bunker Hill: nearby ZIP 62014 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Alton - Melvin Price L&D, Il (16.2 mi from Bunker Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.