Frost Dates for Philadelphia, Pennsylvania, United States of America

Coordinates: 39.952, -75.164

We predict your growing zone to be approximately ...

USDA Growing Zone
USDA Growing Zone - 7a

... and the frost data for your area is ...

Current Risk Level: Hard Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from Apr 16 to Oct 8, which provides approximately 174 frost free days.

For the less tender plants, or if you are planning to protect your plants with fleece etc, your growing season could stretch from Apr 6 to Oct 16, which provides a total of 193 days for growing.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
  • Hard Ground Frost possible
  • Light Ground Frost possible
  • Air Frost possible
  • Safest (unlikely)
First and last frost dates by frost type
FirstLast
Air FrostOct 8Apr 16
Light Ground FrostOct 16Apr 6
Hard Ground FrostNov 1Mar 20