Frost Dates for Northwest Harbor, NY

Based on data from Bridgehampton weather station, 6 miles away

Elevation: 79 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 23
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 24

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost April 30
First Fall Frost October 18

Hard Freeze (28°F)

Last Spring Hard Freeze April 8
First Fall Hard Freeze November 5
41.01°N, 72.22°W © OpenStreetMap

Growing Season

184 Days April 23 to October 24

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 7a

Avg. annual minimum: 0 to 5°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January39°31°23°
February40°32°24°
March46°38°30°
April55°47°38°
May65°56°47°
June75°66°57°
July81°72°64°
August80°71°62°
September73°64°56°
October63°54°45°
November53°44°36°
December44°36°28°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January7.0
February6.3
March7.5
April6.4
May6.6
June5.2
July5.4
August7.0
September7.7
October7.0
November6.8
December9.0

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 14h 57m · Shortest: 9h 03m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:18 AM4:40 PM9h 22m
February6:51 AM5:16 PM10h 25m
March7:09 AM6:49 PM11h 40m
April6:16 AM7:23 PM13h 06m
May5:37 AM7:54 PM14h 17m
June5:22 AM8:17 PM14h 56m
July5:35 AM8:15 PM14h 40m
August6:04 AM7:43 PM13h 38m
September6:36 AM6:51 PM12h 15m
October7:08 AM6:01 PM10h 52m
November6:44 AM4:24 PM9h 40m
December7:13 AM4:17 PM9h 04m

Nearby Stations

Mattituck, NY April 19 - November 1 Orient Pt Sp, NY April 6 - November 17 Westhamptn Gabreski AP, NY May 7 - October 14 Montauk AP, NY April 7 - November 15 Riverhead Rsch Farm, NY April 6 - November 9 Baiting Hollow, NY April 24 - October 25

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