Frost Dates for Carway, AB

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 8
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. August 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 June 13
First Fall Frost August 6

Hard Freeze (−2°C)

Last Spring Hard Freeze May 18
First Fall Hard Freeze September 15
49.00°N, -113.38°W © OpenStreetMap

Growing Season

75 Days June 8 to August 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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°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

-15° -5° 5° 15° 25°
-5°
High: 1°C
Avg: -5°C
Low: -11°C
Jan
-4°
High: 2°C
Avg: -4°C
Low: -10°C
Feb
-1°
High: 5°C
Avg: -1°C
Low: -7°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -3°C
Apr
8°
High: 15°C
Avg: 8°C
Low: 2°C
May
12°
High: 19°C
Avg: 12°C
Low: 6°C
Jun
16°
High: 24°C
Avg: 16°C
Low: 8°C
Jul
15°
High: 24°C
Avg: 15°C
Low: 7°C
Aug
11°
High: 19°C
Avg: 11°C
Low: 4°C
Sep
5°
High: 11°C
Avg: 5°C
Low: -1°C
Oct
-1°
High: 5°C
Avg: -1°C
Low: -6°C
Nov
-5°
High: 1°C
Avg: -5°C
Low: -10°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
23 mm
22.9 mm
Feb
33 mm
33.0 mm
Mar
56 mm
55.9 mm
Apr
79 mm
78.7 mm
May
112 mm
111.8 mm
Jun
23 mm
22.9 mm
Jul
36 mm
35.6 mm
Aug
43 mm
43.2 mm
Sep
25 mm
25.4 mm
Oct
20 mm
20.3 mm
Nov
23 mm
22.9 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:46 AM – 4:14 PM · 8h 27m
Feb: 7:03 AM – 4:57 PM · 9h 54m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:16 AM – 6:44 PM · 13h 28m
May: 4:28 AM – 7:32 PM · 15h 04m
Jun: 4:01 AM – 7:59 PM · 15h 58m
Jul: 4:12 AM – 7:48 PM · 15h 36m
Aug: 4:54 AM – 7:06 PM · 14h 11m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:45 AM – 5:15 PM · 10h 30m
Nov: 7:34 AM – 4:26 PM · 8h 52m
Dec: 7:59 AM – 4:01 PM · 8h 02m
Daylight Longest: 15h 59m · Shortest: 8h 01m

Nearby Stations

Cardston, ABMay 18 - September 19 St. Mary 1 Ssw, MT June 3 - September 8 St Mary, MTJune 12 - September 5 Waterton Park Gate, AB May 30 - September 2 Del Bonita, MT May 28 - September 16 E Glacier, MTJune 8 - September 5

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