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.
Today
74°F
Patchy Fog then Mostly Sunny
Patchy fog before 8am. Mostly sunny, with a high near 74. Southeast wind 0 to 10 mph.
7-day forecast for Fort Indiantown Gap
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph SE | 1% |
| Tonight | 58°F | Mostly Cloudy then Light Rain Likely | 8 mph SE | 55% |
| Thursday | 72°F | Light Rain | 6 to 10 mph S | 91% |
| Thursday Night | 56°F | Chance Light Rain | 0 to 5 mph W | 49% |
| Friday | 69°F | Chance Light Rain | 2 mph NW | 27% |
| Friday Night | 47°F | Slight Chance Light Rain then Partly Cloudy | 0 to 3 mph NW | 22% |
| Saturday | 61°F | Slight Chance Light Rain | 5 to 12 mph NW | 15% |
| Saturday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 10 mph W | 15% |
| Sunday | 58°F | Mostly Sunny | 10 mph NW | 5% |
| Sunday Night | 38°F | Mostly Clear | 8 mph W | 5% |
| Monday | 57°F | Mostly Sunny | 7 to 13 mph W | 5% |
| Monday Night | 36°F | Mostly Clear | 3 to 9 mph W | 4% |
| Tuesday | 62°F | Mostly Sunny | 5 to 12 mph W | 3% |
| Tuesday Night | 38°F | Mostly Clear | 3 to 8 mph W | 0% |
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 Nov 4, 2026.