Frost Dates for Grand Rapids Hydro, 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 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 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 30
First Fall Frost September 15

Hard Freeze (−2°C)

Last Spring Hard Freeze May 13
First Fall Hard Freeze October 9
53.15°N, -99.28°W © OpenStreetMap

Growing Season

122 Days May 25 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 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

-25° -10° 5° 20°
-18°
High: -13°C
Avg: -18°C
Low: -23°C
Jan
-15°
High: -10°C
Avg: -15°C
Low: -21°C
Feb
-8°
High: -3°C
Avg: -8°C
Low: -14°C
Mar
1°
High: 7°C
Avg: 1°C
Low: -5°C
Apr
8°
High: 14°C
Avg: 8°C
Low: 2°C
May
15°
High: 20°C
Avg: 15°C
Low: 10°C
Jun
19°
High: 24°C
Avg: 19°C
Low: 14°C
Jul
18°
High: 23°C
Avg: 18°C
Low: 13°C
Aug
12°
High: 17°C
Avg: 12°C
Low: 7°C
Sep
4°
High: 8°C
Avg: 4°C
Low: 0°C
Oct
-6°
High: -2°C
Avg: -6°C
Low: -10°C
Nov
-15°
High: -10°C
Avg: -15°C
Low: -19°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
3 mm
2.5 mm
Jan
0 mm
0.0 mm
Feb
5 mm
5.1 mm
Mar
13 mm
12.7 mm
Apr
56 mm
55.9 mm
May
91 mm
91.4 mm
Jun
79 mm
78.7 mm
Jul
76 mm
76.2 mm
Aug
64 mm
63.5 mm
Sep
38 mm
38.1 mm
Oct
20 mm
20.3 mm
Nov
10 mm
10.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 8:05 AM – 3:55 PM · 7h 50m
Feb: 7:13 AM – 4:47 PM · 9h 33m
Mar: 6:15 AM – 5:45 PM · 11h 30m
Apr: 5:09 AM – 6:51 PM · 13h 42m
May: 4:12 AM – 7:48 PM · 15h 36m
Jun: 3:40 AM – 8:20 PM · 16h 41m
Jul: 3:53 AM – 8:07 PM · 16h 14m
Aug: 4:44 AM – 7:16 PM · 14h 33m
Sep: 5:48 AM – 6:12 PM · 12h 24m
Oct: 6:52 AM – 5:08 PM · 10h 16m
Nov: 7:50 AM – 4:10 PM · 8h 19m
Dec: 8:21 AM – 3:39 PM · 7h 19m
Daylight Longest: 16h 43m · Shortest: 7h 17m

Nearby Stations

Grand Rapids (Aut), MB June 7 - September 5 Cowan, MBJune 9 - August 25 Cross Lake Jenpeg, MB May 21 - September 27

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