Frost Dates for East Haddam, CT

Based on data from Meriden Markham Muni AP weather station, 19 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 26
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 16
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 1
First Fall Frost October 11

Hard Freeze (28°F)

Last Spring Hard Freeze April 10
First Fall Hard Freeze October 30
41.45°N, -72.46°W © OpenStreetMap

Growing Season

173 Days April 26 to October 16

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 6b

Avg. annual minimum: −5 to 0°F (−21 to −18°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

10° 30° 50° 70° 90°
28°
High: 37°F
Avg: 28°F
Low: 19°F
Jan
30°
High: 39°F
Avg: 30°F
Low: 20°F
Feb
38°
High: 48°F
Avg: 38°F
Low: 28°F
Mar
49°
High: 60°F
Avg: 49°F
Low: 38°F
Apr
59°
High: 70°F
Avg: 59°F
Low: 48°F
May
68°
High: 79°F
Avg: 68°F
Low: 57°F
Jun
73°
High: 84°F
Avg: 73°F
Low: 63°F
Jul
72°
High: 82°F
Avg: 72°F
Low: 61°F
Aug
65°
High: 75°F
Avg: 65°F
Low: 54°F
Sep
53°
High: 64°F
Avg: 53°F
Low: 42°F
Oct
42°
High: 52°F
Avg: 42°F
Low: 32°F
Nov
33°
High: 42°F
Avg: 33°F
Low: 25°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.3"
4.0"
4.00"
Jan
4.1"
4.11"
Feb
4.9"
4.91"
Mar
5.3"
5.28"
Apr
4.8"
4.76"
May
5.2"
5.23"
Jun
3.9"
3.88"
Jul
3.3"
3.27"
Aug
2.3"
2.28"
Sep
3.4"
3.44"
Oct
4.5"
4.51"
Nov
4.9"
4.90"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:21 AM – 4:39 PM · 9h 19m
Feb: 6:48 AM – 5:12 PM · 10h 23m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:26 AM – 6:34 PM · 13h 08m
May: 4:50 AM – 7:10 PM · 14h 20m
Jun: 4:30 AM – 7:30 PM · 14h 59m
Jul: 4:38 AM – 7:22 PM · 14h 43m
Aug: 5:10 AM – 6:50 PM · 13h 40m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:34 AM – 5:26 PM · 10h 51m
Nov: 7:12 AM – 4:48 PM · 9h 37m
Dec: 7:30 AM – 4:30 PM · 9h 00m
Daylight Longest: 15h 01m · Shortest: 8h 59m

Nearby Stations

Mt Carmel, CT April 18 - October 26 New Haven Tweed AP, CT April 17 - October 27 Ansonia 1 Ne, CT April 25 - October 17 Hartford Brainard Fld, CT April 17 - October 26 Burlington, CT April 25 - October 18 Bakersville, CTMay 8 - October 5

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