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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.