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
58°F
Slight Chance Drizzle
A slight chance of drizzle before 2pm. Mostly cloudy, with a high near 58. West wind 9 to 14 mph.
7-day forecast for Mount Olive
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Slight Chance Drizzle | 9 to 14 mph W | 12% |
| Tonight | 42°F | Partly Cloudy | 7 mph SW | 1% |
| Thursday | 62°F | Mostly Sunny | 6 to 12 mph W | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph NW | 1% |
| Friday | 55°F | Partly Sunny | 6 to 10 mph N | 2% |
| Friday Night | 33°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 32°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 59°F | Sunny | 1 to 6 mph NW | 1% |
| Sunday Night | 33°F | Clear | 2 mph W | 0% |
| Monday | 64°F | Sunny | 0 to 6 mph SW | 0% |
| Monday Night | 38°F | Clear | 2 mph SW | 0% |
| Tuesday | 67°F | Sunny | 5 mph W | 1% |
| Tuesday Night | 39°F | Mostly Clear | 1 mph N | 1% |
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
6b
More local growing data for Mount Olive: nearby ZIP 62069 weather · frost dates · planting calendar · Illinois frost dates
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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 Nov 4, 2026.