Frost Dates for Hudson Bay, Canada

Based on data from Mafeking weather station, 55 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. May 25
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 22
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 30
First Fall Frost September 16

Hard Freeze (−2°C)

Last Spring Hard Freeze May 17
First Fall Hard Freeze October 4
52.85°N, -102.38°W © OpenStreetMap

Growing Season

120 Days May 25 to September 22

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 3b

Avg. annual minimum: −35 to −30°F (−37 to −34°C)

Learn more

Köppen Climate iThe 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

-25° -10° 5° 20°
-16°
High: -11°C
Avg: -16°C
Low: -22°C
Jan
-13°
High: -8°C
Avg: -13°C
Low: -19°C
Feb
-6°
High: 0°C
Avg: -6°C
Low: -12°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -4°C
Apr
10°
High: 16°C
Avg: 10°C
Low: 3°C
May
15°
High: 21°C
Avg: 15°C
Low: 9°C
Jun
19°
High: 25°C
Avg: 19°C
Low: 13°C
Jul
17°
High: 23°C
Avg: 17°C
Low: 11°C
Aug
12°
High: 18°C
Avg: 12°C
Low: 6°C
Sep
4°
High: 9°C
Avg: 4°C
Low: -1°C
Oct
-6°
High: -2°C
Avg: -6°C
Low: -10°C
Nov
-13°
High: -9°C
Avg: -13°C
Low: -18°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
13 mm
12.7 mm
Jan
5 mm
5.1 mm
Feb
10 mm
10.2 mm
Mar
38 mm
38.1 mm
Apr
76 mm
76.2 mm
May
107 mm
106.7 mm
Jun
91 mm
91.4 mm
Jul
84 mm
83.8 mm
Aug
71 mm
71.1 mm
Sep
48 mm
48.3 mm
Oct
36 mm
35.6 mm
Nov
10 mm
10.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 8:03 AM – 3:57 PM · 7h 54m
Feb: 7:12 AM – 4:48 PM · 9h 36m
Mar: 6:15 AM – 5:45 PM · 11h 30m
Apr: 5:10 AM – 6:50 PM · 13h 40m
May: 4:14 AM – 7:46 PM · 15h 32m
Jun: 3:42 AM – 8:18 PM · 16h 35m
Jul: 3:55 AM – 8:05 PM · 16h 09m
Aug: 4:45 AM – 7:15 PM · 14h 30m
Sep: 5:48 AM – 6:12 PM · 12h 23m
Oct: 6:51 AM – 5:09 PM · 10h 18m
Nov: 7:48 AM – 4:12 PM · 8h 23m
Dec: 8:18 AM – 3:42 PM · 7h 24m
Daylight Longest: 16h 37m · Shortest: 7h 23m

Nearby Stations

Swan River Rcs, MB May 23 - September 19 Cowan, MBJune 9 - August 25 Pelly, SKMay 31 - September 10 Pelly 2, SKMay 21 - September 19 Boggy Creek, MB June 3 - September 2 The Pas A, MB May 24 - September 22

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