Olive Branch, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olive Branch, a community in Alexander County, Illinois.
This Afternoon
98°F
Sunny
Sunny. High near 98, with temperatures falling to around 96 in the afternoon. West southwest wind around 6 mph.
7-day forecast for Olive Branch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 6 mph WSW | 0% |
| Tonight | 72°F | Mostly Clear | 3 mph SW | 0% |
| Sunday | 97°F | Mostly Sunny | 1 to 6 mph WSW | 2% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph NE | 20% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph NNE | 32% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 6 mph NNE | 33% |
| Tuesday | 80°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 6 to 10 mph N | 33% |
| Tuesday Night | 59°F | Partly Cloudy | 5 to 10 mph N | 7% |
| Wednesday | 78°F | Mostly Sunny | 7 mph N | 1% |
| Wednesday Night | 57°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Thursday | 78°F | Mostly Sunny | 2 to 6 mph N | 1% |
| Thursday Night | 60°F | Partly Cloudy | 1 to 5 mph NNE | 1% |
| Friday | 80°F | Partly Sunny | 2 to 7 mph NNE | 4% |
| Friday Night | 60°F | Partly Cloudy | 2 to 6 mph NNE | 4% |
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 Sep 19, 2026.