Frost Dates for Kotzebue, AK
Based on data from Kotzebue Ralph Wein AP weather station, 2 miles away
Elevation: 20 ft
Frost Dates
Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
June 5
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
September 24
30% Probability
Only 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
June 10
First Fall Frost
September 17
Hard Freeze (28°F)
Last Spring Hard Freeze
May 27
First Fall Hard Freeze
October 3
Growing Season
111 Days
June 5 to September 24
USDA Hardiness Zone
Hardiness 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 3a
Avg. annual minimum: −40 to −35°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfc
Subarctic
Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.
Temperature
-10°
10°
30°
50°
70°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 5° | -2° | -8° |
| February | 9° | 1° | -6° |
| March | 9° | 2° | -6° |
| April | 24° | 16° | 9° |
| May | 39° | 33° | 27° |
| June | 53° | 48° | 42° |
| July | 60° | 55° | 51° |
| August | 57° | 52° | 48° |
| September | 48° | 43° | 39° |
| October | 31° | 27° | 23° |
| November | 16° | 11° | 6° |
| December | 9° | 2° | -4° |
Precipitation
0"
1"
2"
2.5"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 1.2 |
| February | 1.1 |
| March | 1.2 |
| April | 1.2 |
| May | 1.3 |
| June | 1.6 |
| July | 2.2 |
| August | 2.5 |
| September | 2.0 |
| October | 1.6 |
| November | 1.3 |
| December | 1.2 |
Sunrise / Sunset
Daylight
Alaska Time (AKT)
Longest: 24h 00m · Shortest: 0h 00m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 12:23 PM | 3:37 PM | 3h 15m |
| February | 10:19 AM | 5:51 PM | 7h 31m |
| March | 9:27 AM | 8:34 PM | 11h 07m |
| April | 7:19 AM | 10:22 PM | 15h 03m |
| May | 5:16 AM | 12:18 PM | 19h 02m |
| June | – | – | 24h (midnight sun) |
| July | 4:27 AM | 13:25 PM | 20h 59m |
| August | 6:35 AM | 11:15 PM | 16h 40m |
| September | 8:24 AM | 9:06 PM | 12h 42m |
| October | 10:09 AM | 7:02 PM | 8h 53m |
| November | 11:13 AM | 3:58 PM | 4h 45m |
| December | – | – | 0h (polar night) |
Nearby Stations
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