Mount Olive, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Olive, a city in Macoupin County, Illinois.
Tonight
55°F
Rain
Rain. Cloudy, with a low around 55. South wind 9 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.
7-day forecast for Mount Olive
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain | 9 to 18 mph S | 92% |
| Wednesday | 61°F | Slight Chance Drizzle then Mostly Cloudy | 8 to 14 mph SW | 12% |
| Wednesday Night | 41°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 63°F | Sunny | 5 to 12 mph W | 0% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 8% |
| Friday | 56°F | Mostly Cloudy | 5 to 9 mph NW | 6% |
| Friday Night | 36°F | Partly Cloudy | 2 to 6 mph N | 2% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 60°F | Sunny | 1 to 7 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 3 mph W | 4% |
| Monday | 64°F | Sunny | 2 to 8 mph SW | 2% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 67°F | Sunny | 6 mph W | 0% |
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.