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
83°F
Sunny
Sunny, with a high near 83. East wind around 0 mph.
7-day forecast for Pen Argyl
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 0 mph | 0% |
| Tonight | 63°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 51% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 0 mph | 61% |
| Thursday | 87°F | Showers And Thunderstorms | 0 to 5 mph SW | 79% |
| Thursday Night | 70°F | Showers And Thunderstorms | 0 to 5 mph SW | 79% |
| Friday | 87°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 66% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph W | 66% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 51% |
| Sunday | 87°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 69°F | Mostly Clear | 5 mph SW | 12% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 18% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph W | 18% |
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 Aug 4, 2026.