Frost Dates for Ketchikan Intl AP, AK

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 22
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 23
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 April 30
First Fall Frost October 15

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze March 31
First Fall Hard Freeze November 10
55.36°N, -131.71°W © OpenStreetMap

Growing Season

184 Days April 22 to October 23

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 7b

Learn more

Temperature

30° 40° 50° 60° 70°
36°
High: 40°
Avg: 36°
Low: 32°
Jan
36°
High: 41°
Avg: 36°
Low: 32°
Feb
38°
High: 44°
Avg: 38°
Low: 32°
Mar
44°
High: 50°
Avg: 44°
Low: 37°
Apr
50°
High: 57°
Avg: 50°
Low: 43°
May
55°
High: 61°
Avg: 55°
Low: 49°
Jun
59°
High: 65°
Avg: 59°
Low: 53°
Jul
59°
High: 65°
Avg: 59°
Low: 53°
Aug
54°
High: 59°
Avg: 54°
Low: 48°
Sep
46°
High: 51°
Avg: 46°
Low: 41°
Oct
40°
High: 44°
Avg: 40°
Low: 36°
Nov
36°
High: 40°
Avg: 36°
Low: 33°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 4" 8" 12" 15.3"
12.9"
12.91"
Jan
10.6"
10.59"
Feb
9.4"
9.40"
Mar
7.5"
7.51"
Apr
7.8"
7.83"
May
5.9"
5.93"
Jun
6.7"
6.66"
Jul
9.6"
9.63"
Aug
11.7"
11.70"
Sep
15.3"
15.30"
Oct
14.3"
14.31"
Nov
13.2"
13.22"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11h14h16h17h17h15h12h10h8h7h
Jan: 8:17 AM – 3:43 PM · 7h 26m
Feb: 7:20 AM – 4:40 PM · 9h 20m
Mar: 6:16 AM – 5:44 PM · 11h 27m
Apr: 5:04 AM – 6:56 PM · 13h 51m
May: 4:02 AM – 7:58 PM · 15h 56m
Jun: 3:26 AM – 8:34 PM · 17h 09m
Jul: 3:41 AM – 8:19 PM · 16h 38m
Aug: 4:37 AM – 7:23 PM · 14h 46m
Sep: 5:47 AM – 6:13 PM · 12h 26m
Oct: 6:57 AM – 5:03 PM · 10h 07m
Nov: 8:01 AM – 3:59 PM · 7h 59m
Dec: 8:35 AM – 3:25 PM · 6h 51m
Daylight Longest: 17h 11m · Shortest: 6h 49m

Nearby Stations

Beaver Falls, AK April 4 - November 9 Ketchikan 10n, AK April 20 - October 26 Metlakatla 6 S, AK April 14 - October 25 Annette Island AP, AK April 4 - October 31 Thorne Bay, AKMay 1 - October 13 Grey Islet (Aut), Canada March 3 - December 6

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