Frost Dates for East Haven, CT

Based on data from New Haven Tweed AP weather station, 1 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 17
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 27
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 April 22
First Fall Frost October 20

Hard Freeze (28°F)

Last Spring Hard Freeze April 4
First Fall Hard Freeze November 6
41.28°N, -72.87°W © OpenStreetMap

Growing Season

193 Days April 17 to October 27

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°
31°
High: 38°F
Avg: 31°F
Low: 23°F
Jan
32°
High: 40°F
Avg: 32°F
Low: 24°F
Feb
39°
High: 47°F
Avg: 39°F
Low: 30°F
Mar
49°
High: 58°F
Avg: 49°F
Low: 39°F
Apr
59°
High: 68°F
Avg: 59°F
Low: 49°F
May
68°
High: 76°F
Avg: 68°F
Low: 59°F
Jun
74°
High: 82°F
Avg: 74°F
Low: 66°F
Jul
73°
High: 81°F
Avg: 73°F
Low: 65°F
Aug
66°
High: 75°F
Avg: 66°F
Low: 57°F
Sep
55°
High: 64°F
Avg: 55°F
Low: 46°F
Oct
45°
High: 53°F
Avg: 45°F
Low: 36°F
Nov
36°
High: 44°F
Avg: 36°F
Low: 29°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"
4.2"
4.16"
Jan
4.4"
4.42"
Feb
4.8"
4.82"
Mar
4.7"
4.71"
Apr
3.9"
3.88"
May
4.0"
4.00"
Jun
3.6"
3.59"
Jul
4.2"
4.22"
Aug
3.5"
3.55"
Sep
4.1"
4.11"
Oct
5.0"
4.98"
Nov
4.8"
4.81"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:20 AM – 4:40 PM · 9h 20m
Feb: 6:48 AM – 5:12 PM · 10h 24m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:27 AM – 6:33 PM · 13h 07m
May: 4:51 AM – 7:09 PM · 14h 19m
Jun: 4:31 AM – 7:29 PM · 14h 58m
Jul: 4:39 AM – 7:21 PM · 14h 42m
Aug: 5:10 AM – 6:50 PM · 13h 39m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:34 AM – 5:26 PM · 10h 52m
Nov: 7:11 AM – 4:49 PM · 9h 38m
Dec: 7:29 AM – 4:31 PM · 9h 02m
Daylight Longest: 14h 59m · Shortest: 9h 01m

Nearby Stations

Mt Carmel, CT April 18 - October 26 Ansonia 1 Ne, CT April 25 - October 17 Bridgeport Sikorsky Mem AP, CT April 5 - November 6 Meriden Markham Muni AP, CT April 26 - October 16 Riverhead Rsch Farm, NY April 6 - November 9 Mt Sinai, NYApril 4 - November 7

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