Collegeville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Collegeville, a borough in Montgomery County, Pennsylvania.
Today
76°F
Mostly Sunny
Mostly sunny, with a high near 76. East wind 5 to 10 mph.
7-day forecast for Collegeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 5 to 10 mph E | 2% |
| Tonight | 59°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph E | 23% |
| Sunday | 75°F | Rain Showers Likely | 5 to 10 mph S | 57% |
| Sunday Night | 57°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 83% |
| Monday | 69°F | Chance Rain Showers | 5 to 10 mph NE | 25% |
| Monday Night | 50°F | Chance Rain Showers | 5 to 10 mph NE | 36% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 41% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Wednesday | 63°F | Chance Rain Showers | 15 mph NE | 30% |
| Wednesday Night | 49°F | Chance Rain Showers | 15 mph NE | 32% |
| Thursday | 62°F | Chance Rain Showers | 15 mph NE | 33% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Friday | 66°F | Chance Rain Showers | 10 to 15 mph N | 25% |
| Friday Night | 49°F | Slight Chance Rain Showers | 5 to 10 mph N | 24% |
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 Sep 19, 2026.