Frost Dates for Hartford, Connecticut, United States of America

Coordinates: 41.764, -72.686

We predict your growing zone to be approximately ...

USDA Growing Zone
USDA Growing Zone - 5b

... 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 May 9 to Sep 20, which provides approximately 133 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 28 to Sep 30, which provides a total of 155 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 FrostSep 20May 9
Light Ground FrostSep 30Apr 28
Hard Ground FrostOct 14Apr 12