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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
71°F
Clear
Clear, with a low around 71. Southeast wind around 5 mph.

7-day forecast for Bunker Hill

WhenTempForecastWindPrecip
Overnight 71°F Clear 5 mph SE 4%
Saturday 96°F Partly Sunny 3 to 8 mph SW 8%
Saturday Night 70°F Partly Cloudy 5 mph SW 4%
Sunday 91°F Slight Chance Rain Showers then Chance Showers And Thunderstorms 2 to 8 mph NW 32%
Sunday Night 63°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 7 to 12 mph NE 64%
Monday 76°F Showers And Thunderstorms Likely 8 to 13 mph NE 69%
Monday Night 56°F Chance Showers And Thunderstorms 7 to 13 mph NE 52%
Tuesday 70°F Slight Chance Rain Showers then Partly Sunny 13 mph NE 20%
Tuesday Night 52°F Mostly Cloudy 6 to 13 mph N 11%
Wednesday 73°F Mostly Sunny 10 mph N 1%
Wednesday Night 53°F Partly Cloudy 3 to 9 mph N 0%
Thursday 75°F Mostly Sunny 5 to 8 mph N 1%
Thursday Night 55°F Partly Cloudy 2 to 8 mph NE 4%
Friday 77°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.