Pennsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pennsburg, a borough in Montgomery County, Pennsylvania.
This Afternoon
69°F
Mostly Sunny
Mostly sunny, with a high near 69. South wind 0 to 5 mph.
7-day forecast for Pennsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Sunny | 0 to 5 mph S | 2% |
| Tonight | 46°F | Areas Of Fog | 0 mph | 2% |
| Wednesday | 73°F | Areas Of Fog then Partly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 55°F | Mostly Cloudy | 0 to 5 mph S | 8% |
| Thursday | 72°F | Light Rain Likely | 5 to 10 mph S | 61% |
| Thursday Night | 58°F | Light Rain Likely | 0 to 5 mph SW | 73% |
| Friday | 70°F | Light Rain Likely | 0 to 5 mph SW | 73% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 70% |
| Saturday | 66°F | Slight Chance Light Rain | 0 to 5 mph NW | 21% |
| Saturday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph NW | 17% |
| Sunday | 61°F | Mostly Sunny | 0 to 5 mph NW | 13% |
| Sunday Night | 39°F | Partly Cloudy then Chance Light Rain | 0 to 5 mph NW | 25% |
| Monday | 58°F | Chance Light Rain | 5 to 10 mph NW | 34% |
| Monday Night | 37°F | Chance Light Rain | 5 to 10 mph W | 34% |
Forecast source: National Weather Service (api.weather.gov) for Pennsburg (40.394, -75.496). Updated through the day.
Growing snapshot for Pennsburg
Last spring frost
Apr 26
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
7a
More local growing data for Pennsburg: nearby ZIP 18073 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Sellersville, Pa (8.8 mi from Pennsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.