Mount Penn, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Penn, a borough in Berks County, Pennsylvania.
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. North wind around 5 mph.
7-day forecast for Mount Penn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 73°F | Mostly Sunny | 5 mph E | 2% |
| Saturday Night | 61°F | Slight Chance Rain Showers | 5 to 10 mph E | 46% |
| Sunday | 74°F | Rain Showers | 5 to 10 mph S | 89% |
| Sunday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph NW | 89% |
| Monday | 68°F | Chance Rain Showers | 10 mph NE | 37% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Tuesday | 62°F | Chance Rain Showers | 15 mph NE | 42% |
| Tuesday Night | 51°F | Chance Rain Showers | 15 mph NE | 42% |
| Wednesday | 61°F | Chance Rain Showers | 15 mph NE | 38% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 15 mph NE | 41% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 39% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 33% |
| Friday | 68°F | Chance Rain Showers | 10 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Mount Penn (40.329, -75.890). Updated through the day.
Growing snapshot for Mount Penn
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
197 days
Hardiness zone
7a
More local growing data for Mount Penn: nearby ZIP 19602 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Reading Spaatz Fld, Pa (3.8 mi from Mount Penn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.