Collegeville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Collegeville, a borough in Montgomery County, Pennsylvania.
Overnight
48°F
Mostly Clear
Mostly clear, with a low around 48. Wind around 0 mph.
7-day forecast for Collegeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Clear | 0 mph | 1% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 57°F | Mostly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 72°F | Light Rain Likely | 5 to 10 mph S | 61% |
| Thursday Night | 60°F | Light Rain | 0 to 5 mph SW | 84% |
| Friday | 70°F | Light Rain | 0 to 5 mph N | 84% |
| Friday Night | 47°F | Light Rain Likely | 0 to 5 mph NW | 69% |
| Saturday | 64°F | Mostly Sunny | 5 to 10 mph NW | 10% |
| Saturday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 10% |
| Sunday | 60°F | Mostly Sunny | 5 to 10 mph NW | 4% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 5% |
| Monday | 58°F | Mostly Sunny then Slight Chance Light Rain | 5 to 15 mph W | 15% |
| Monday Night | 34°F | Slight Chance Light Rain then Mostly Clear | 5 mph W | 15% |
| Tuesday | 63°F | Sunny | 5 to 10 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov) for Collegeville (40.187, -75.458). Updated through the day.
Growing snapshot for Collegeville
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
173 days
Hardiness zone
7a
More local growing data for Collegeville: nearby ZIP 19426 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Graterford 1 E, Pa (2.9 mi from Collegeville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.