Frost Dates for Head of Westport, MA

Based on data from New Bedford Muni AP weather station, 7 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 29
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 15
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 May 5
First Fall Frost October 9

Hard Freeze (28°F)

Last Spring Hard Freeze April 15
First Fall Hard Freeze October 28
41.62°N, -71.06°W © OpenStreetMap

Growing Season

169 Days April 29 to October 15

USDA Hardiness Zone iHardiness 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 (−18 to −15°C)

Learn more

Köppen Climate iThe 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

20° 40° 60° 80°
30°
High: 39°F
Avg: 30°F
Low: 21°F
Jan
31°
High: 41°F
Avg: 31°F
Low: 22°F
Feb
38°
High: 47°F
Avg: 38°F
Low: 28°F
Mar
47°
High: 57°F
Avg: 47°F
Low: 36°F
Apr
57°
High: 67°F
Avg: 57°F
Low: 46°F
May
66°
High: 76°F
Avg: 66°F
Low: 55°F
Jun
72°
High: 83°F
Avg: 72°F
Low: 62°F
Jul
71°
High: 81°F
Avg: 71°F
Low: 60°F
Aug
63°
High: 74°F
Avg: 63°F
Low: 52°F
Sep
53°
High: 64°F
Avg: 53°F
Low: 42°F
Oct
43°
High: 54°F
Avg: 43°F
Low: 33°F
Nov
35°
High: 44°F
Avg: 35°F
Low: 26°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.0"
4.7"
4.73"
Jan
4.3"
4.26"
Feb
4.7"
4.70"
Mar
4.1"
4.09"
Apr
3.6"
3.64"
May
3.6"
3.64"
Jun
3.0"
3.04"
Jul
2.3"
2.28"
Aug
2.3"
2.32"
Sep
4.4"
4.44"
Oct
5.0"
4.96"
Nov
4.7"
4.73"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:21 AM – 4:39 PM · 9h 18m
Feb: 6:49 AM – 5:11 PM · 10h 23m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:26 AM – 6:34 PM · 13h 08m
May: 4:49 AM – 7:11 PM · 14h 21m
Jun: 4:30 AM – 7:30 PM · 15h 00m
Jul: 4:38 AM – 7:22 PM · 14h 44m
Aug: 5:10 AM – 6:50 PM · 13h 41m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:35 AM – 5:25 PM · 10h 51m
Nov: 7:12 AM – 4:48 PM · 9h 36m
Dec: 7:30 AM – 4:30 PM · 8h 59m
Daylight Longest: 15h 02m · Shortest: 8h 58m

Nearby Stations

New Bedford Coop, MA April 11 - November 5 Rochester, MA April 23 - October 21 Tiverton, RIApril 11 - November 2 Taunton Muni AP, MA May 2 - October 8 Middleboro, MA April 23 - October 16 E Wareham, MA April 21 - October 24

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