Olive Branch, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olive Branch, a community in Alexander County, Illinois.
Overnight
57°F
Slight Chance Rain Showers
A slight chance of rain showers before 3am. Mostly cloudy. Low around 57, with temperatures rising to around 59 overnight. Southwest wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Olive Branch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Slight Chance Rain Showers | 7 mph SW | 20% |
| Wednesday | 66°F | Partly Sunny | 5 to 8 mph WSW | 6% |
| Wednesday Night | 45°F | Mostly Clear | 3 mph WSW | 0% |
| Thursday | 68°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 47°F | Partly Cloudy | 2 mph WNW | 0% |
| Friday | 61°F | Mostly Sunny | 2 to 9 mph NNW | 0% |
| Friday Night | 39°F | Mostly Clear | 2 to 6 mph N | 0% |
| Saturday | 57°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph N | 0% |
| Sunday | 61°F | Sunny | 0 to 5 mph NNW | 0% |
| Sunday Night | 36°F | Clear | 1 mph NNW | 0% |
| Monday | 64°F | Sunny | 0 to 3 mph SW | 0% |
| Monday Night | 39°F | Clear | 1 mph WSW | 1% |
| Tuesday | 68°F | Sunny | 0 to 3 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Olive Branch (37.184, -89.350). Updated through the day.
Growing snapshot for Olive Branch
Last spring frost
Apr 2
First fall frost
Oct 31
Growing season
211 days
Hardiness zone
7a
More local growing data for Olive Branch: nearby ZIP 62969 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cairo 3N, Il (10.6 mi from Olive Branch). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.