Pen Argyl, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pen Argyl, a borough in Northampton County, Pennsylvania.
Today
71°F
Mostly Sunny
Mostly sunny, with a high near 71. East wind 0 to 5 mph.
7-day forecast for Pen Argyl
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Tonight | 56°F | Mostly Cloudy then Chance Rain Showers | 5 mph SE | 31% |
| Sunday | 68°F | Rain Showers | 5 mph S | 99% |
| Sunday Night | 55°F | Showers And Thunderstorms | 5 to 15 mph W | 89% |
| Monday | 68°F | Partly Sunny | 5 to 15 mph NE | 9% |
| Monday Night | 49°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph NE | 29% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 29% |
| Tuesday Night | 47°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Wednesday | 62°F | Slight Chance Rain Showers | 15 mph NE | 23% |
| Wednesday Night | 48°F | Chance Rain Showers | 15 mph NE | 32% |
| Thursday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Friday | 66°F | Chance Rain Showers | 10 to 15 mph N | 25% |
| Friday Night | 49°F | Chance Rain Showers | 10 to 15 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Pen Argyl (40.868, -75.254). Updated through the day.
Growing snapshot for Pen Argyl
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
6b
More local growing data for Pen Argyl: nearby ZIP 18072 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Northampton
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Climate data from the nearest NOAA station, Belvidere Brg, Nj (9.3 mi from Pen Argyl). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.