Frost Dates for Miami Thiessen, MB

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 14
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 24
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 21
First Fall Frost September 20

Hard Freeze (−2°C)

Last Spring Hard Freeze April 29
First Fall Hard Freeze October 10
49.45°N, -98.25°W © OpenStreetMap

Growing Season

133 Days May 14 to September 24

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

-20° -5° 10° 25°
-14°
High: -9°C
Avg: -14°C
Low: -19°C
Jan
-12°
High: -7°C
Avg: -12°C
Low: -17°C
Feb
-5°
High: 0°C
Avg: -5°C
Low: -10°C
Mar
5°
High: 11°C
Avg: 5°C
Low: -1°C
Apr
12°
High: 18°C
Avg: 12°C
Low: 5°C
May
18°
High: 23°C
Avg: 18°C
Low: 12°C
Jun
20°
High: 26°C
Avg: 20°C
Low: 14°C
Jul
19°
High: 26°C
Avg: 19°C
Low: 13°C
Aug
15°
High: 21°C
Avg: 15°C
Low: 8°C
Sep
7°
High: 12°C
Avg: 7°C
Low: 1°C
Oct
-3°
High: 2°C
Avg: -3°C
Low: -7°C
Nov
-11°
High: -7°C
Avg: -11°C
Low: -15°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
13 mm
12.7 mm
Jan
13 mm
12.7 mm
Feb
23 mm
22.9 mm
Mar
23 mm
22.9 mm
Apr
97 mm
96.5 mm
May
97 mm
96.5 mm
Jun
66 mm
66.0 mm
Jul
76 mm
76.2 mm
Aug
46 mm
45.7 mm
Sep
30 mm
30.5 mm
Oct
23 mm
22.9 mm
Nov
28 mm
27.9 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:48 AM – 4:12 PM · 8h 23m
Feb: 7:04 AM – 4:56 PM · 9h 52m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:15 AM – 6:45 PM · 13h 29m
May: 4:26 AM – 7:34 PM · 15h 07m
Jun: 3:59 AM – 8:01 PM · 16h 02m
Jul: 4:10 AM – 7:50 PM · 15h 40m
Aug: 4:53 AM – 7:07 PM · 14h 13m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:46 AM – 5:14 PM · 10h 29m
Nov: 7:36 AM – 4:24 PM · 8h 48m
Dec: 8:01 AM – 3:59 PM · 7h 58m
Daylight Longest: 16h 04m · Shortest: 7h 56m

Nearby Stations

Deerwood Rcs, MB May 18 - September 25 Carman, MBMay 18 - September 20 Carman U Of M Cs, MB May 20 - September 23 Morden Cda Cs, MB May 15 - September 30 Portage Southport, MB May 17 - September 25 Snowflake, MB May 20 - September 18

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