Frost Dates for Fredericton, NB

Based on data from Fredericton Cda Cs weather station, 3 miles away

Elevation: 110 m

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. May 6
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 9

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 May 11
First Fall Frost October 3

Hard Freeze (−2°C)

Last Spring Hard Freeze April 22
First Fall Hard Freeze October 26
45.95°N, 66.67°W © OpenStreetMap

Growing Season

156 Days May 6 to October 9

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 5a

Avg. annual minimum: −29 to −26°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-4°-9°-14°
February-2°-8°-13°
March3°-2°-8°
April10°5°-1°
May18°11°5°
June22°16°11°
July26°20°14°
August25°19°13°
September21°15°9°
October14°9°4°
November7°2°-2°
December0°-4°-8°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January64
February76
March84
April86
May84
June104
July79
August91
September86
October114
November109
December114

Sunrise / Sunset

Daylight Atlantic Time (AT) Longest: 15h 33m · Shortest: 8h 27m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Atlantic Time (AT))
Month Sunrise Sunset Daylight
January8:11 AM5:01 PM8h 50m
February7:37 AM5:45 PM10h 07m
March7:48 AM7:24 PM11h 37m
April6:47 AM8:06 PM13h 19m
May6:00 AM8:45 PM14h 45m
June5:41 AM9:12 PM15h 31m
July5:56 AM9:08 PM15h 12m
August6:32 AM8:29 PM13h 57m
September7:12 AM7:30 PM12h 18m
October7:52 AM6:31 PM10h 40m
November7:36 AM4:48 PM9h 12m
December8:08 AM4:36 PM8h 28m

Nearby Stations

Fredericton A, NB May 14 - September 27 Gagetown Awos A, NB May 20 - September 26 Acadia Forest Exp St, NB May 31 - September 12 Mactaquac Prov Park, NB May 29 - September 14 Gagetown 2, NBMay 7 - October 8 Vanceboro No 2, ME May 13 - October 1

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