Glendon, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glendon, a borough in Northampton County, Pennsylvania.
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. North wind around 10 mph.
7-day forecast for Glendon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 10 mph N | 0% |
| Tonight | 53°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 72°F | Mostly Sunny | 5 mph E | 1% |
| Saturday Night | 58°F | Patchy Fog | 5 mph SE | 50% |
| Sunday | 71°F | Rain Showers | 5 mph S | 92% |
| Sunday Night | 58°F | Patchy Fog | 0 to 5 mph NW | 92% |
| Monday | 67°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Monday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 36% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Wednesday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Wednesday Night | 49°F | Chance Rain Showers | 10 mph NE | 39% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 mph NE | 35% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 31% |
Forecast source: National Weather Service (api.weather.gov) for Glendon (40.658, -75.240). Updated through the day.
Growing snapshot for Glendon
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for Glendon: nearby ZIP 18042 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Mount Bethel
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Northampton
Old Orchard
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Wind Gap
Climate data from the nearest NOAA station, Phillipsburg-Easton Brg, Nj (3.9 mi from Glendon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.