Mount Olive, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mount Olive, a city in Macoupin County, Illinois.

Today

86°F

Sunny

Sunny, with a high near 86. South wind around 3 mph.

7-day forecast for Mount Olive

When	Temp	Forecast	Wind	Precip
Today	86°F	Sunny	3 mph S	0%
Tonight	64°F	Mostly Clear	3 mph SE	0%
Wednesday	88°F	Mostly Sunny	2 to 6 mph S	12%
Wednesday Night	68°F	Slight Chance Showers And Thunderstorms	5 mph S	72%
Thursday	83°F	Showers And Thunderstorms	2 to 6 mph SW	75%
Thursday Night	66°F	Chance Showers And Thunderstorms	3 mph SE	26%
Friday	84°F	Chance Showers And Thunderstorms then Partly Sunny	3 mph SW	26%
Friday Night	67°F	Chance Showers And Thunderstorms	2 mph S	30%
Saturday	86°F	Chance Showers And Thunderstorms then Mostly Sunny	1 to 5 mph S	30%
Saturday Night	70°F	Mostly Clear	6 mph S	9%
Sunday	89°F	Sunny	5 to 9 mph S	6%
Sunday Night	72°F	Mostly Clear	8 mph S	5%
Monday	90°F	Mostly Sunny	6 to 9 mph SW	7%
Monday Night	72°F	Slight Chance Showers And Thunderstorms	8 mph S	17%

Forecast source: National Weather Service (api.weather.gov) for Mount Olive (39.073, -89.728). Updated through the day.

Growing snapshot for Mount Olive

Last spring frost

Apr 13

First fall frost

Oct 24

Growing season

192 days

Hardiness zone

More local growing data for Mount Olive: nearby ZIP 62069 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Benld Bunker Hill Carlinville Chesterfield Dorchester Eagarville East Gillespie Gillespie Girard Hettick Lake Ka-Ho Modesto Mount Clare Nilwood Palmyra Royal Lakes Sawyerville Scottville Shipman Standard City Staunton Virden White City Wilsonville

All Illinois locations ›

Climate data from the nearest NOAA station, Hillsboro, Il (14.2 mi from Mount Olive). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.