Frost Dates for Swan River, MB

Based on data from Swan River Rcs weather station, 2 miles away

Elevation: 340 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 23
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. September 19

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 26
First Fall Frost September 14

Hard Freeze (−2°C)

Last Spring Hard Freeze May 16
First Fall Hard Freeze September 29
52.11°N, 101.27°W © OpenStreetMap

Growing Season

119 Days May 23 to September 19

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 3b

Avg. annual minimum: −37 to −34°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-12°-16°-21°
February-9°-15°-20°
March-2°-8°-14°
April9°3°-4°
May17°10°3°
June22°16°9°
July25°18°12°
August24°17°10°
September19°12°5°
October9°4°-1°
November-1°-6°-10°
December-9°-14°-18°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January0
February3
March0
April5
May48
June76
July71
August53
September38
October25
November0
December0

Sunrise / Sunset

Daylight Central Time (CT) Longest: 16h 31m · Shortest: 7h 29m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January8:54 AM4:54 PM7h 60m
February8:10 AM5:49 PM9h 39m
March8:09 AM7:40 PM11h 31m
April6:56 AM8:34 PM13h 38m
May5:57 AM9:25 PM15h 27m
June5:31 AM9:60 PM16h 29m
July5:49 AM9:52 PM16h 04m
August6:36 AM9:03 PM14h 27m
September7:28 AM7:51 PM12h 23m
October8:20 AM6:40 PM10h 20m
November8:16 AM4:44 PM8h 28m
December8:55 AM4:26 PM7h 31m

Nearby Stations

Cowan, MBJune 9 - August 25 Pelly, SKMay 31 - September 10 Mafeking, MBMay 25 - September 22 Pelly 2, SKMay 21 - September 19 Boggy Creek, MB June 3 - September 2 Roblin, MBMay 23 - September 17

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