Willow Grove, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Willow Grove, a community in Montgomery County, Pennsylvania.
Overnight
64°F
Mostly Cloudy
Mostly cloudy, with a low around 64. North wind around 5 mph.
7-day forecast for Willow Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Cloudy | 5 mph N | 0% |
| Tuesday | 85°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Tuesday Night | 66°F | Mostly Cloudy | 0 mph | 5% |
| Wednesday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 50% |
| Wednesday Night | 72°F | Showers And Thunderstorms | 5 mph S | 78% |
| Thursday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 26% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 42% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 44% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph W | 15% |
| Monday | 90°F | Sunny | 5 to 10 mph W | 9% |
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 Aug 4, 2026.