Fort Indiantown Gap, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Indiantown Gap, a community in Lebanon County, Pennsylvania.
This Afternoon
81°F
Mostly Sunny
Mostly sunny, with a high near 81. North wind around 9 mph.
7-day forecast for Fort Indiantown Gap
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Mostly Sunny | 9 mph N | 0% |
| Tonight | 52°F | Mostly Clear | 5 to 9 mph N | 0% |
| Saturday | 74°F | Mostly Sunny | 6 mph E | 3% |
| Saturday Night | 59°F | Mostly Cloudy then Chance Rain Showers | 6 to 9 mph E | 40% |
| Sunday | 74°F | Rain Showers | 9 mph S | 97% |
| Sunday Night | 58°F | Showers And Thunderstorms | 6 to 9 mph NW | 97% |
| Monday | 70°F | Chance Rain Showers | 9 mph NE | 34% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 12 mph NE | 42% |
| Tuesday | 63°F | Chance Rain Showers | 13 mph E | 53% |
| Tuesday Night | 49°F | Chance Rain Showers | 14 mph NE | 53% |
| Wednesday | 61°F | Chance Rain Showers | 14 mph NE | 45% |
| Wednesday Night | 49°F | Chance Showers And Thunderstorms | 13 mph NE | 45% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 13 mph NE | 41% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 37% |
Forecast source: National Weather Service (api.weather.gov) for Fort Indiantown Gap (40.444, -76.582). Updated through the day.
Growing snapshot for Fort Indiantown Gap
Last spring frost
Apr 20
First fall frost
Oct 25
Growing season
185 days
Hardiness zone
7a
More local growing data for Fort Indiantown Gap: nearby ZIP 17038 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Annville
Avon
Campbelltown
Cleona
Cornwall
Fredericksburg
Hebron
Jonestown
Lebanon
Lebanon South
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 (10 mi from Fort Indiantown Gap). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.