Frost Dates for Cardston, Canada

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 18
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 19
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 22
First Fall Frost September 15

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 6
First Fall Hard Freeze September 28
49.20°N, -113.28°W © OpenStreetMap

Growing Season

124 Days May 18 to September 19

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 4a

Learn more

Temperature

10° 30° 50° 70°
24°
High: 35°
Avg: 24°
Low: 13°
Jan
25°
High: 36°
Avg: 25°
Low: 14°
Feb
31°
High: 42°
Avg: 31°
Low: 20°
Mar
40°
High: 51°
Avg: 40°
Low: 29°
Apr
50°
High: 62°
Avg: 50°
Low: 39°
May
57°
High: 69°
Avg: 57°
Low: 46°
Jun
64°
High: 79°
Avg: 64°
Low: 50°
Jul
63°
High: 78°
Avg: 63°
Low: 49°
Aug
54°
High: 68°
Avg: 54°
Low: 41°
Sep
42°
High: 54°
Avg: 42°
Low: 31°
Oct
32°
High: 42°
Avg: 32°
Low: 22°
Nov
24°
High: 34°
Avg: 24°
Low: 13°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 3" 3.3"
0.3"
0.30"
Jan
0.2"
0.20"
Feb
0.4"
0.40"
Mar
0.5"
0.50"
Apr
2.1"
2.10"
May
3.3"
3.30"
Jun
0.8"
0.80"
Jul
0.9"
0.90"
Aug
1.0"
1.00"
Sep
0.6"
0.60"
Oct
0.1"
0.10"
Nov
0.4"
0.40"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h10h12h13h15h16h16h14h12h10h9h8h
Jan: 7:47 AM – 4:13 PM · 8h 26m
Feb: 7:04 AM – 4:56 PM · 9h 53m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:16 AM – 6:44 PM · 13h 29m
May: 4:27 AM – 7:33 PM · 15h 06m
Jun: 4:00 AM – 7:60 PM · 15h 60m
Jul: 4:11 AM – 7:49 PM · 15h 37m
Aug: 4:54 AM – 7:06 PM · 14h 12m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:45 AM – 5:15 PM · 10h 30m
Nov: 7:35 AM – 4:25 PM · 8h 50m
Dec: 7:60 AM – 4:00 PM · 8h 00m
Daylight Longest: 16h 01m · Shortest: 7h 59m

Nearby Stations

Carway, CanadaJune 8 - August 22 Waterton Park Gate, Canada May 30 - September 2 Del Bonita, MT May 28 - September 16 St. Mary 1 Ssw, MT June 3 - September 8 St Mary, MTJune 12 - September 5 Brocket Agdm, Canada May 14 - September 21

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