Lebanon South, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon South, a community in Lebanon County, Pennsylvania.
Tonight
51°F
Partly Cloudy
Partly cloudy, with a low around 51. North wind 5 to 10 mph.
7-day forecast for Lebanon South
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Saturday | 75°F | Mostly Sunny | 7 mph E | 2% |
| Saturday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 7 to 10 mph SE | 34% |
| Sunday | 75°F | Rain Showers | 12 mph S | 95% |
| Sunday Night | 60°F | Showers And Thunderstorms | 7 to 10 mph NW | 95% |
| Monday | 71°F | Chance Rain Showers | 10 mph NE | 36% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Tuesday | 63°F | Chance Rain Showers | 16 mph NE | 49% |
| Tuesday Night | 50°F | Chance Rain Showers | 16 mph NE | 49% |
| Wednesday | 62°F | Chance Rain Showers | 16 mph NE | 43% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 16 mph NE | 44% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 43% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 7 to 13 mph NE | 38% |
| Friday | 68°F | Chance Rain Showers then Partly Sunny | 9 to 13 mph N | 27% |
Forecast source: National Weather Service (api.weather.gov) for Lebanon South (40.328, -76.407). Updated through the day.
Growing snapshot for Lebanon South
Last spring frost
Apr 20
First fall frost
Oct 25
Growing season
185 days
Hardiness zone
7a
More local growing data for Lebanon South: nearby ZIP 17042 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Annville
Avon
Campbelltown
Cleona
Cornwall
Fort Indiantown Gap
Fredericksburg
Hebron
Jonestown
Lebanon
Mount Gretna
Mount Gretna Heights
Myerstown
Palmyra
Pleasant Hill
Quentin
Sand Hill
Schaefferstown
Timber Hills
West Myerstown
Climate data from the nearest NOAA station, Lebanon 2 W, Pa (3.5 mi from Lebanon South). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.