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
64°F
Clear
Clear, with a low around 64. Southeast wind around 2 mph.
7-day forecast for Bunker Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 2 mph SE | 0% |
| Tuesday | 86°F | Sunny | 5 mph S | 0% |
| Tuesday Night | 65°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 88°F | Sunny | 2 to 6 mph S | 12% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 76% |
| Thursday | 84°F | Showers And Thunderstorms | 6 mph S | 76% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 1 to 5 mph SE | 25% |
| Friday | 85°F | Chance Showers And Thunderstorms then Partly Sunny | 5 mph SW | 25% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 3 mph S | 31% |
| Saturday | 87°F | Chance Showers And Thunderstorms then Mostly Sunny | 1 to 6 mph S | 31% |
| Saturday Night | 70°F | Mostly Clear | 6 mph S | 8% |
| Sunday | 90°F | Sunny | 5 to 9 mph S | 6% |
| Sunday Night | 72°F | Mostly Clear | 8 mph S | 5% |
| Monday | 91°F | Mostly Sunny | 6 to 9 mph SW | 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 Aug 4, 2026.