Frost Dates for Main Brook, NL

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. June 6
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. September 20
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 June 10
First Fall Frost September 10

Hard Freeze (−2°C)

Last Spring Hard Freeze May 17
First Fall Hard Freeze October 16
51.18°N, -56.02°W © OpenStreetMap

Growing Season

106 Days June 6 to September 20

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 4b

Avg. annual minimum: −25 to −20°F (−32 to −29°C)

Learn more

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

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

-20° -10° 0° 10° 20°
-11°
High: -7°C
Avg: -11°C
Low: -16°C
Jan
-11°
High: -6°C
Avg: -11°C
Low: -16°C
Feb
-6°
High: -1°C
Avg: -6°C
Low: -11°C
Mar
0°
High: 3°C
Avg: 0°C
Low: -4°C
Apr
5°
High: 9°C
Avg: 5°C
Low: 0°C
May
10°
High: 15°C
Avg: 10°C
Low: 5°C
Jun
14°
High: 19°C
Avg: 14°C
Low: 9°C
Jul
15°
High: 20°C
Avg: 15°C
Low: 10°C
Aug
11°
High: 15°C
Avg: 11°C
Low: 7°C
Sep
5°
High: 9°C
Avg: 5°C
Low: 2°C
Oct
0°
High: 3°C
Avg: 0°C
Low: -3°C
Nov
-6°
High: -2°C
Avg: -6°C
Low: -9°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm
119 mm
119.4 mm
Jan
117 mm
116.8 mm
Feb
84 mm
83.8 mm
Mar
64 mm
63.5 mm
Apr
74 mm
73.7 mm
May
76 mm
76.2 mm
Jun
119 mm
119.4 mm
Jul
91 mm
91.4 mm
Aug
102 mm
101.6 mm
Sep
94 mm
94.0 mm
Oct
76 mm
76.2 mm
Nov
114 mm
114.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 7:56 AM – 4:04 PM · 8h 08m
Feb: 7:08 AM – 4:52 PM · 9h 43m
Mar: 6:14 AM – 5:46 PM · 11h 32m
Apr: 5:12 AM – 6:48 PM · 13h 35m
May: 4:20 AM – 7:40 PM · 15h 20m
Jun: 3:50 AM – 8:10 PM · 16h 19m
Jul: 4:03 AM – 7:57 PM · 15h 55m
Aug: 4:49 AM – 7:11 PM · 14h 22m
Sep: 5:49 AM – 6:11 PM · 12h 22m
Oct: 6:49 AM – 5:11 PM · 10h 23m
Nov: 7:42 AM – 4:18 PM · 8h 35m
Dec: 8:10 AM – 3:50 PM · 7h 41m
Daylight Longest: 16h 21m · Shortest: 7h 39m

Nearby Stations

St Anthony, NL June 6 - September 29 Englee (Aut), NL May 26 - October 17 Plum Point, NLMay 28 - October 6 Ferolle Point (Aut), NL May 19 - October 22 Blanc-Sablon A, QC June 5 - September 23 Mary'S Harbour, NL June 4 - September 27

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