Collegeville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Collegeville, a borough in Montgomery County, Pennsylvania.
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. Northeast wind 0 to 5 mph.
7-day forecast for Collegeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Tonight | 65°F | Mostly Cloudy | 0 mph | 6% |
| Wednesday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 74% |
| Wednesday Night | 71°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 56% |
| Thursday | 90°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 10 mph S | 38% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 45% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 45% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Sunday | 89°F | Mostly Sunny | 0 to 5 mph W | 13% |
| Sunday Night | 70°F | Mostly Clear | 0 to 5 mph SW | 13% |
| Monday | 90°F | Sunny | 0 to 10 mph W | 11% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 18% |
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 Aug 4, 2026.