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Philadelphia, NY Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Philadelphia, a village in Jefferson County, New York.

Today
64°F
Mostly Sunny
Mostly sunny, with a high near 64. Northeast wind around 5 mph.

7-day forecast for Philadelphia

WhenTempForecastWindPrecip
Today 64°F Mostly Sunny 5 mph NE 0%
Tonight 45°F Mostly Cloudy then Slight Chance Rain Showers 2 to 6 mph E 23%
Sunday 57°F Rain Showers 5 to 8 mph E 86%
Sunday Night 42°F Mostly Cloudy 3 to 7 mph N 0%
Monday 59°F Partly Sunny 9 mph N 0%
Monday Night 40°F Mostly Cloudy 3 to 8 mph NE 0%
Tuesday 62°F Mostly Sunny 5 to 10 mph NE 0%
Tuesday Night 40°F Partly Cloudy 3 to 10 mph NE 1%
Wednesday 66°F Mostly Sunny 3 to 7 mph E 1%
Wednesday Night 42°F Mostly Cloudy 6 mph E 7%
Thursday 65°F Partly Sunny 3 to 8 mph E 11%
Thursday Night 43°F Mostly Cloudy then Slight Chance Rain Showers 2 to 8 mph NE 16%
Friday 65°F Slight Chance Rain Showers 3 to 10 mph NE 16%
Friday Night 44°F Slight Chance Rain Showers then Mostly Cloudy 3 to 9 mph NE 15%

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

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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 Sep 19, 2026.