Frost Dates for Hidden Falls Hatchery, 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 29
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 25
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 4
First Fall Frost October 17

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 10
First Fall Hard Freeze November 9
57.22°N, -134.88°W © OpenStreetMap

Growing Season

179 Days April 29 to October 25

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

20° 30° 40° 50° 60°
31°
High: 35°
Avg: 31°
Low: 28°
Jan
32°
High: 36°
Avg: 32°
Low: 28°
Feb
34°
High: 39°
Avg: 34°
Low: 29°
Mar
40°
High: 46°
Avg: 40°
Low: 34°
Apr
47°
High: 53°
Avg: 47°
Low: 40°
May
52°
High: 58°
Avg: 52°
Low: 47°
Jun
55°
High: 60°
Avg: 55°
Low: 50°
Jul
55°
High: 60°
Avg: 55°
Low: 50°
Aug
51°
High: 55°
Avg: 51°
Low: 46°
Sep
43°
High: 47°
Avg: 43°
Low: 39°
Oct
36°
High: 39°
Avg: 36°
Low: 32°
Nov
33°
High: 36°
Avg: 33°
Low: 30°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 4" 8" 12" 13.1"
8.4"
8.37"
Jan
7.1"
7.07"
Feb
7.1"
7.10"
Mar
5.0"
5.05"
Apr
3.8"
3.75"
May
3.3"
3.27"
Jun
4.8"
4.76"
Jul
8.1"
8.08"
Aug
12.3"
12.31"
Sep
13.1"
13.13"
Oct
10.3"
10.35"
Nov
9.1"
9.07"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11h14h16h18h17h15h12h10h8h6h
Jan: 8:29 AM – 3:31 PM · 7h 02m
Feb: 7:26 AM – 4:34 PM · 9h 08m
Mar: 6:18 AM – 5:42 PM · 11h 25m
Apr: 5:00 AM – 6:60 PM · 13h 59m
May: 3:52 AM – 8:08 PM · 16h 15m
Jun: 3:12 AM – 8:48 PM · 17h 36m
Jul: 3:29 AM – 8:31 PM · 17h 02m
Aug: 4:30 AM – 7:30 PM · 14h 59m
Sep: 5:46 AM – 6:14 PM · 12h 28m
Oct: 7:01 AM – 4:59 PM · 9h 58m
Nov: 8:11 AM – 3:49 PM · 7h 39m
Dec: 8:48 AM – 3:12 PM · 6h 24m
Daylight Longest: 17h 39m · Shortest: 6h 21m

Nearby Stations

Sitka 1 Ne, AKMay 3 - October 18 Sitka Airport, AK April 12 - November 1 Little Port Walter, AK April 21 - October 31 Hoonah, AKMay 9 - October 4 Port Alexander, AK April 18 - November 5 Eaglecrest Base, AK May 21 - October 1

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