Frost Dates for Kivalina AP, AK
Elevation: 3 m
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 10
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 11
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 16
First Fall Frost
September 3
Hard Freeze (28°F)
Last Spring Hard Freeze
June 1
First Fall Hard Freeze
September 24
Growing Season
93 Days
June 10 to September 11
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°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 7° | -1° | -9° |
| February | 10° | 1° | -7° |
| March | 9° | 1° | -8° |
| April | 24° | 15° | 6° |
| May | 38° | 32° | 26° |
| June | 50° | 44° | 38° |
| July | 56° | 51° | 46° |
| August | 55° | 49° | 44° |
| September | 46° | 41° | 35° |
| October | 31° | 26° | 21° |
| November | 17° | 11° | 6° |
| December | 10° | 3° | -4° |
Precipitation
0"
1"
2"
2.2"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 0.9 |
| February | 0.9 |
| March | 0.3 |
| April | 0.9 |
| May | 1.2 |
| June | 1.6 |
| July | 2.2 |
| August | 2.0 |
| September | 1.8 |
| October | 1.5 |
| November | 1.0 |
| December | 0.9 |
Sunrise / Sunset
Daylight
Longest: 24h 00m · Shortest: 0h 00m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 10:48 AM | 1:12 PM | 2h 25m |
| February | 8:21 AM | 3:39 PM | 7h 18m |
| March | 6:28 AM | 5:32 PM | 11h 05m |
| April | 4:24 AM | 7:36 PM | 15h 11m |
| May | 2:15 AM | 9:45 PM | 19h 30m |
| June | – | – | 24h (midnight sun) |
| July | 1:03 AM | 10:57 PM | 21h 55m |
| August | 3:33 AM | 8:27 PM | 16h 54m |
| September | 5:38 AM | 6:22 PM | 12h 43m |
| October | 7:38 AM | 4:22 PM | 8h 45m |
| November | 9:52 AM | 2:08 PM | 4h 16m |
| December | – | – | 0h (polar night) |
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