Frost Dates for Great Duck Island (Aut), ON

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. April 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. October 27
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 2
First Fall Frost October 22

Hard Freeze (−2°C)

Last Spring Hard Freeze April 11
First Fall Hard Freeze November 11
45.63°N, -82.95°W © OpenStreetMap

Growing Season

185 Days April 25 to October 27

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 6a

Avg. annual minimum: −10 to −5°F (−23 to −21°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

-10° 0° 10° 20°
-6°
High: -3°C
Avg: -6°C
Low: -9°C
Jan
-5°
High: -2°C
Avg: -5°C
Low: -9°C
Feb
-2°
High: 1°C
Avg: -2°C
Low: -5°C
Mar
3°
High: 6°C
Avg: 3°C
Low: 0°C
Apr
8°
High: 12°C
Avg: 8°C
Low: 5°C
May
13°
High: 17°C
Avg: 13°C
Low: 10°C
Jun
18°
High: 21°C
Avg: 18°C
Low: 15°C
Jul
18°
High: 21°C
Avg: 18°C
Low: 15°C
Aug
16°
High: 18°C
Avg: 16°C
Low: 13°C
Sep
9°
High: 12°C
Avg: 9°C
Low: 7°C
Oct
3°
High: 6°C
Avg: 3°C
Low: 1°C
Nov
-2°
High: 1°C
Avg: -2°C
Low: -4°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm
10 mm
10.2 mm
Jan
15 mm
15.2 mm
Feb
13 mm
12.7 mm
Mar
15 mm
15.2 mm
Apr
30 mm
30.5 mm
May
41 mm
40.6 mm
Jun
15 mm
15.2 mm
Jul
43 mm
43.2 mm
Aug
69 mm
68.6 mm
Sep
20 mm
20.3 mm
Oct
20 mm
20.3 mm
Nov
8 mm
7.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:34 AM – 4:26 PM · 8h 52m
Feb: 6:56 AM – 5:04 PM · 10h 08m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 18m
May: 4:39 AM – 7:21 PM · 14h 43m
Jun: 4:15 AM – 7:45 PM · 15h 29m
Jul: 4:25 AM – 7:35 PM · 15h 10m
Aug: 5:02 AM – 6:58 PM · 13h 56m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:23 AM – 4:37 PM · 9h 14m
Dec: 7:45 AM – 4:15 PM · 8h 31m
Daylight Longest: 15h 31m · Shortest: 8h 29m

Nearby Stations

Rogers City, MI May 10 - October 14 Alpena 10nw, MIMay 13 - October 3 Alpena Wwtp, MIMay 5 - October 17 Sandfield, ONMay 17 - October 6 Alpena Co Rgnl AP, MI May 17 - October 1 Detour Village, MI May 5 - October 20

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