Lebanon South, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon South, a community in Lebanon County, Pennsylvania.
Today
75°F
Patchy Fog then Mostly Sunny
Patchy fog before 8am. Mostly sunny. High near 75, with temperatures falling to around 69 in the afternoon. South wind 0 to 13 mph.
7-day forecast for Lebanon South
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Fog then Mostly Sunny | 0 to 13 mph S | 1% |
| Tonight | 59°F | Mostly Cloudy then Chance Light Rain | 7 to 12 mph S | 37% |
| Thursday | 73°F | Light Rain | 8 to 12 mph S | 88% |
| Thursday Night | 57°F | Light Rain Likely | 1 to 7 mph W | 61% |
| Friday | 69°F | Chance Light Rain | 3 mph NW | 36% |
| Friday Night | 46°F | Chance Light Rain then Partly Cloudy | 5 mph NW | 27% |
| Saturday | 61°F | Mostly Sunny | 5 to 15 mph W | 13% |
| Saturday Night | 39°F | Partly Cloudy | 9 to 14 mph W | 13% |
| Sunday | 59°F | Mostly Sunny | 9 to 14 mph NW | 5% |
| Sunday Night | 36°F | Mostly Clear | 7 to 10 mph W | 4% |
| Monday | 58°F | Sunny | 9 to 17 mph W | 5% |
| Monday Night | 35°F | Mostly Clear | 5 to 12 mph W | 4% |
| Tuesday | 63°F | Sunny | 6 to 15 mph W | 3% |
| Tuesday Night | 36°F | Mostly Clear | 5 to 10 mph W | 0% |
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 Nov 4, 2026.