Bunker Hill, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bunker Hill, a city in Macoupin County, Illinois.
Overnight
70°F
Partly Cloudy
Partly cloudy, with a low around 70. Southeast wind 5 to 8 mph.
7-day forecast for Bunker Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Partly Cloudy | 5 to 8 mph SE | 11% |
| Saturday | 96°F | Mostly Sunny | 5 to 8 mph SW | 6% |
| Saturday Night | 70°F | Partly Cloudy | 5 mph SW | 5% |
| Sunday | 91°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 7 mph NW | 30% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 to 9 mph N | 63% |
| Monday | 78°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 64% |
| Monday Night | 57°F | Showers And Thunderstorms Likely | 7 to 13 mph NE | 64% |
| Tuesday | 71°F | Chance Rain Showers then Mostly Cloudy | 13 mph N | 25% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 13 mph N | 5% |
| Wednesday | 74°F | Mostly Sunny | 6 to 9 mph N | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 8 mph N | 2% |
| Thursday | 75°F | Mostly Sunny | 3 to 8 mph N | 4% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 8 mph NE | 3% |
| Friday | 76°F | Mostly Sunny | 3 to 8 mph NE | 5% |
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 Sep 19, 2026.