Willow Grove, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Willow Grove, a community in Montgomery County, Pennsylvania.
Tonight
50°F
Mostly Clear then Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 50. South wind around 5 mph.
7-day forecast for Willow Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear then Patchy Fog | 5 mph S | 2% |
| Wednesday | 74°F | Patchy Fog then Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 59°F | Mostly Cloudy | 5 mph S | 3% |
| Thursday | 73°F | Chance Light Rain | 5 to 10 mph S | 44% |
| Thursday Night | 61°F | Light Rain | 0 to 5 mph S | 80% |
| Friday | 69°F | Light Rain | 0 to 5 mph W | 80% |
| Friday Night | 52°F | Light Rain | 0 to 5 mph NW | 78% |
| Saturday | 65°F | Chance Light Rain | 5 to 10 mph NW | 38% |
| Saturday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 15% |
| Sunday | 60°F | Mostly Sunny | 5 to 10 mph W | 9% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Monday | 59°F | Slight Chance Light Rain | 10 to 15 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Light Rain | 5 to 10 mph W | 23% |
| Tuesday | 62°F | Slight Chance Light Rain then Sunny | 10 to 15 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Willow Grove (40.147, -75.117). Updated through the day.
Growing snapshot for Willow Grove
Last spring frost
Apr 11
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
7b
More local growing data for Willow Grove: nearby ZIP 19090 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Willow Grove Nas, Pa (3.8 mi from Willow Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.