Lower Allen, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lower Allen, a community in Cumberland County, Pennsylvania.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. North wind 3 to 7 mph.
7-day forecast for Lower Allen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 3 to 7 mph N | 0% |
| Saturday | 76°F | Patchy Fog then Mostly Sunny | 5 mph E | 3% |
| Saturday Night | 64°F | Mostly Cloudy then Chance Rain Showers | 5 to 9 mph SE | 48% |
| Sunday | 77°F | Showers And Thunderstorms | 6 to 12 mph S | 95% |
| Sunday Night | 61°F | Showers And Thunderstorms | 5 to 9 mph NW | 95% |
| Monday | 70°F | Chance Rain Showers | 9 mph NE | 36% |
| Monday Night | 57°F | Chance Rain Showers | 6 to 10 mph NE | 48% |
| Tuesday | 63°F | Rain Showers Likely | 10 mph NE | 61% |
| Tuesday Night | 52°F | Rain Showers Likely | 12 mph NE | 61% |
| Wednesday | 61°F | Chance Rain Showers | 10 mph NE | 51% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 51% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 mph NE | 44% |
| Thursday Night | 53°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 39% |
| Friday | 68°F | Slight Chance Rain Showers then Partly Sunny | 6 to 9 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov) for Lower Allen (40.227, -76.903). Updated through the day.
Growing snapshot for Lower Allen
Last spring frost
Apr 15
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
7a
More local growing data for Lower Allen: nearby ZIP 17043 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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New Kingstown
Newburg
Newville
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Schlusser
Shippensburg
Shippensburg University
Shiremanstown
Climate data from the nearest NOAA station, Harrisburg 1 Ne, Pa (2.8 mi from Lower Allen). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.