Lower Allen, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Lower Allen, a community in Cumberland County, Pennsylvania.

This Afternoon

72°F

Mostly Sunny

Mostly sunny, with a high near 72. South wind around 5 mph.

7-day forecast for Lower Allen

When	Temp	Forecast	Wind	Precip
This Afternoon	72°F	Mostly Sunny	5 mph S	1%
Tonight	51°F	Partly Cloudy	3 mph SE	1%
Wednesday	75°F	Mostly Sunny	2 to 10 mph S	2%
Wednesday Night	61°F	Mostly Cloudy then Rain Showers Likely	5 to 8 mph S	73%
Thursday	74°F	Rain Showers	5 to 9 mph S	80%
Thursday Night	58°F	Chance Rain Showers	0 to 5 mph W	53%
Friday	70°F	Chance Rain Showers	3 mph NW	53%
Friday Night	49°F	Chance Rain Showers then Partly Cloudy	3 mph NW	48%
Saturday	64°F	Mostly Sunny	5 to 9 mph NW	13%
Saturday Night	41°F	Partly Cloudy	5 to 8 mph NW	13%
Sunday	61°F	Mostly Sunny	3 to 8 mph W	6%
Sunday Night	39°F	Partly Cloudy	6 mph W	13%
Monday	60°F	Slight Chance Rain Showers	6 to 12 mph W	16%
Monday Night	39°F	Mostly Clear	3 to 8 mph W	11%

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

More local growing data for Lower Allen: nearby ZIP 17043 weather · frost dates · planting calendar · Pennsylvania frost dates

Nearby towns & communities

Boiling Springs Camp Hill Carlisle Carlisle Barracks Dauphin Enola Gardners Idaville Lemoyne Marysville Mechanicsburg Messiah College Mount Holly Springs New Kingstown Newburg Newville Plainfield Schlusser Shippensburg Shippensburg University Shiremanstown

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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 Nov 3, 2026.