Frost Dates for Hanna, Canada

Based on data from Craigmyle weather station, 19 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 12
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 1
First Fall Frost September 8

Hard Freeze (−2°C)

Last Spring Hard Freeze May 12
First Fall Hard Freeze September 22
51.63°N, -111.90°W © OpenStreetMap

Growing Season

110 Days May 25 to September 12

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

-20° -5° 10° 25°
-12°
High: -6°C
Avg: -12°C
Low: -17°C
Jan
-9°
High: -3°C
Avg: -9°C
Low: -15°C
Feb
-4°
High: 2°C
Avg: -4°C
Low: -9°C
Mar
4°
High: 11°C
Avg: 4°C
Low: -3°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
16°
High: 24°C
Avg: 16°C
Low: 9°C
Aug
12°
High: 19°C
Avg: 12°C
Low: 4°C
Sep
4°
High: 11°C
Avg: 4°C
Low: -2°C
Oct
-4°
High: 1°C
Avg: -4°C
Low: -10°C
Nov
-10°
High: -5°C
Avg: -10°C
Low: -16°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
5 mm
5.1 mm
Jan
0 mm
0.0 mm
Feb
15 mm
15.2 mm
Mar
23 mm
22.9 mm
Apr
56 mm
55.9 mm
May
99 mm
99.1 mm
Jun
71 mm
71.1 mm
Jul
58 mm
58.4 mm
Aug
25 mm
25.4 mm
Sep
3 mm
2.5 mm
Oct
10 mm
10.2 mm
Nov
5 mm
5.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 7:58 AM – 4:02 PM · 8h 03m
Feb: 7:10 AM – 4:50 PM · 9h 40m
Mar: 6:14 AM – 5:46 PM · 11h 31m
Apr: 5:11 AM – 6:49 PM · 13h 37m
May: 4:18 AM – 7:42 PM · 15h 25m
Jun: 3:47 AM – 8:13 PM · 16h 25m
Jul: 3:60 AM – 8:00 PM · 16h 00m
Aug: 4:47 AM – 7:13 PM · 14h 25m
Sep: 5:49 AM – 6:11 PM · 12h 23m
Oct: 6:50 AM – 5:10 PM · 10h 21m
Nov: 7:45 AM – 4:15 PM · 8h 31m
Dec: 8:13 AM – 3:47 PM · 7h 34m
Daylight Longest: 16h 27m · Shortest: 7h 33m

Nearby Stations

Drumheller East, AB May 12 - September 19 Sleepy Hollow, AB May 30 - September 1 Three Hills, AB May 22 - September 15 Coronation Climate, AB May 29 - September 11 Hussar Agdm, AB May 16 - September 20 Forestburg Plant Site, AB May 12 - September 25

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