Frost Dates for Fort Macleod, Canada

Based on data from Monarch weather station, 13 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 10
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 2

Hard Freeze (−2°C)

Last Spring Hard Freeze May 11
First Fall Hard Freeze September 24
49.72°N, -113.42°W © OpenStreetMap

Growing Season

108 Days May 25 to September 10

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

-15° -5° 5° 15° 25°
-7°
High: -1°C
Avg: -7°C
Low: -13°C
Jan
-5°
High: 2°C
Avg: -5°C
Low: -11°C
Feb
0°
High: 6°C
Avg: 0°C
Low: -7°C
Mar
5°
High: 13°C
Avg: 5°C
Low: -2°C
Apr
10°
High: 18°C
Avg: 10°C
Low: 3°C
May
14°
High: 21°C
Avg: 14°C
Low: 7°C
Jun
17°
High: 25°C
Avg: 17°C
Low: 10°C
Jul
17°
High: 24°C
Avg: 17°C
Low: 8°C
Aug
12°
High: 20°C
Avg: 12°C
Low: 4°C
Sep
6°
High: 13°C
Avg: 6°C
Low: -1°C
Oct
-1°
High: 5°C
Avg: -1°C
Low: -7°C
Nov
-6°
High: 0°C
Avg: -6°C
Low: -12°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
0 mm
0.0 mm
Jan
3 mm
2.5 mm
Feb
13 mm
12.7 mm
Mar
30 mm
30.5 mm
Apr
53 mm
53.3 mm
May
94 mm
94.0 mm
Jun
41 mm
40.6 mm
Jul
43 mm
43.2 mm
Aug
28 mm
27.9 mm
Sep
18 mm
17.8 mm
Oct
5 mm
5.1 mm
Nov
5 mm
5.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14.5h12.5h10.5h9h8h
Jan: 7:50 AM – 4:10 PM · 8h 20m
Feb: 7:05 AM – 4:55 PM · 9h 50m
Mar: 6:13 AM – 5:47 PM · 11h 33m
Apr: 5:15 AM – 6:45 PM · 13h 31m
May: 4:25 AM – 7:35 PM · 15h 10m
Jun: 3:57 AM – 8:03 PM · 16h 05m
Jul: 4:09 AM – 7:51 PM · 15h 43m
Aug: 4:52 AM – 7:08 PM · 14h 15m
Sep: 5:49 AM – 6:11 PM · 12h 21m
Oct: 6:46 AM – 5:14 PM · 10h 28m
Nov: 7:37 AM – 4:23 PM · 8h 46m
Dec: 8:03 AM – 3:57 PM · 7h 54m
Daylight Longest: 16h 07m · Shortest: 7h 53m

Nearby Stations

Lethbridge Cda, AB May 12 - September 24 Claresholm, AB May 20 - September 14 Brocket Agdm, AB May 14 - September 21 Stavely Aafc, AB May 18 - September 23 Pincher Creek Climate, AB May 23 - September 15 Pincher Creek (Aut), AB May 26 - September 14

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