Philadelphia, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Philadelphia, a village in Jefferson County, New York.
Today
78°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny, with a high near 78. Southwest wind 5 to 9 mph.
7-day forecast for Philadelphia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Areas Of Fog then Sunny | 5 to 9 mph SW | 0% |
| Tonight | 58°F | Clear | 2 to 6 mph S | 0% |
| Wednesday | 85°F | Sunny | 7 mph S | 0% |
| Wednesday Night | 66°F | Partly Cloudy then Slight Chance Rain Showers | 1 to 5 mph S | 24% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 7 mph S | 58% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely | 6 mph SW | 58% |
| Friday | 81°F | Chance Rain Showers then Chance Showers And Thunderstorms | 6 mph SW | 42% |
| Friday Night | 63°F | Chance Showers And Thunderstorms | 5 mph SW | 46% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 46% |
| Saturday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 20% |
| Sunday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 19% |
| Sunday Night | 65°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 to 10 mph SW | 46% |
| Monday | 80°F | Chance Rain Showers | 8 to 12 mph SW | 53% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 3 to 10 mph SW | 53% |
Forecast source: National Weather Service (api.weather.gov) for Philadelphia (44.154, -75.710). Updated through the day.
Growing snapshot for Philadelphia
Last spring frost
May 14
First fall frost
Sep 26
Growing season
134 days
Hardiness zone
5a
More local growing data for Philadelphia: nearby ZIP 13673 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Adams
Adams Center
Alexandria Bay
Antwerp
Belleville
Black River
Brownville
Calcium
Cape Vincent
Carthage
Chaumont
Clayton
Deferiet
Depauville
Dexter
Ellisburg
Evans Mills
Felts Mills
Fishers Landing
Fort Drum
Glen Park
Great Bend
Henderson
Herrings
La Fargeville
Lorraine
Mannsville
Oxbow
Pamelia Center
Pierrepont Manor
Climate data from the nearest NOAA station, Gouverneur 3 Nw, Ny (16 mi from Philadelphia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.