Frost Dates for Juneau 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. May 4
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 3
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 9
First Fall Frost September 28

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 19
First Fall Hard Freeze October 18
58.36°N, -134.56°W © OpenStreetMap

Growing Season

152 Days May 4 to October 3

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 6b

Learn more

Temperature

20° 40° 60°
28°
High: 33°
Avg: 28°
Low: 24°
Jan
30°
High: 36°
Avg: 30°
Low: 25°
Feb
33°
High: 39°
Avg: 33°
Low: 27°
Mar
41°
High: 49°
Avg: 41°
Low: 33°
Apr
49°
High: 58°
Avg: 49°
Low: 40°
May
55°
High: 62°
Avg: 55°
Low: 47°
Jun
57°
High: 64°
Avg: 57°
Low: 50°
Jul
56°
High: 63°
Avg: 56°
Low: 49°
Aug
50°
High: 56°
Avg: 50°
Low: 44°
Sep
42°
High: 47°
Avg: 42°
Low: 37°
Oct
34°
High: 38°
Avg: 34°
Low: 29°
Nov
30°
High: 35°
Avg: 30°
Low: 26°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 6" 7.8"
5.6"
5.57"
Jan
4.4"
4.41"
Feb
4.1"
4.12"
Mar
3.6"
3.61"
Apr
3.7"
3.71"
May
3.4"
3.37"
Jun
4.7"
4.66"
Jul
7.1"
7.09"
Aug
7.8"
7.79"
Sep
7.4"
7.38"
Oct
5.8"
5.83"
Nov
5.7"
5.74"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11h14h16h18h17h15h12h10h7h6h
Jan: 8:37 AM – 3:23 PM · 6h 47m
Feb: 7:30 AM – 4:30 PM · 8h 60m
Mar: 6:18 AM – 5:42 PM · 11h 23m
Apr: 4:58 AM – 7:02 PM · 14h 05m
May: 3:46 AM – 8:14 PM · 16h 28m
Jun: 3:03 AM – 8:57 PM · 17h 55m
Jul: 3:21 AM – 8:39 PM · 17h 18m
Aug: 4:26 AM – 7:34 PM · 15h 08m
Sep: 5:46 AM – 6:14 PM · 12h 29m
Oct: 7:04 AM – 4:56 PM · 9h 53m
Nov: 8:17 AM – 3:43 PM · 7h 26m
Dec: 8:58 AM – 3:02 PM · 6h 05m
Daylight Longest: 17h 58m · Shortest: 6h 02m

Nearby Stations

Juneau Forecast Office, AK May 9 - October 4 Auke Bay, AKApril 27 - October 18 Eaglecrest Base, AK May 21 - October 1 Juneau Dwtn, AK April 20 - October 22 Juneau Mile 17, AK April 29 - October 20 Juneau Lena Pt, AK April 11 - November 1

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