King of Prussia, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for King of Prussia, a community in Montgomery County, Pennsylvania.
This Afternoon
77°F
Mostly Sunny
Mostly sunny, with a high near 77. East wind around 5 mph.
7-day forecast for King of Prussia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Mostly Sunny | 5 mph E | 2% |
| Tonight | 60°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph E | 18% |
| Sunday | 76°F | Rain Showers Likely | 5 to 10 mph S | 57% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 5 to 10 mph W | 73% |
| Monday | 70°F | Chance Rain Showers | 5 to 10 mph NE | 32% |
| Monday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 36% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 42% |
| Tuesday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Wednesday | 63°F | Chance Rain Showers | 15 mph NE | 31% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday | 63°F | Chance Rain Showers | 15 mph NE | 34% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Friday | 67°F | Chance Rain Showers | 10 to 15 mph N | 27% |
| Friday Night | 51°F | Chance Rain Showers | 10 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for King of Prussia (40.096, -75.379). Updated through the day.
Growing snapshot for King of Prussia
Last spring frost
Apr 8
First fall frost
Oct 31
Growing season
203 days
Hardiness zone
7a
More local growing data for King of Prussia: nearby ZIP 19406 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Ambler
Arcadia University
Audubon
Bala Cynwyd
Blue Bell
Bridgeport
Bryn Athyn
Cheltenham Village
Collegeville
Conshohocken
Eagleville
East Greenville
Elkins Park
Evansburg
Flourtown
Fort Washington
Gilbertsville
Glenside
Green Lane
Halfway House
Harleysville
Hatboro
Hatfield
Horsham
Jenkintown
Kenilworth
Kulpsville
Lansdale
Maple Glen
McKinley
Climate data from the nearest NOAA station, Norristown, Pa (2.8 mi from King of Prussia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.