Lower Allen, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lower Allen, a community in Cumberland County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind 0 to 3 mph.
7-day forecast for Lower Allen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 3 mph E | 0% |
| Tonight | 68°F | Mostly Cloudy | 0 to 3 mph E | 5% |
| Wednesday | 84°F | Chance Rain Showers | 1 to 5 mph E | 45% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph SE | 70% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 7 mph S | 66% |
| Thursday Night | 72°F | Showers And Thunderstorms Likely | 0 to 6 mph SW | 66% |
| Friday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 64% |
| Friday Night | 71°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 64% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 51% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 51% |
| Sunday | 89°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 72°F | Partly Cloudy | 1 to 5 mph SW | 12% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph W | 20% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 20% |
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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Shippensburg University
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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 Aug 4, 2026.