Frost Dates for Delta Junction 20 Se, AK

Elevation: 343 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 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. August 21

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 11
First Fall Frost August 15

Hard Freeze (28°F)

Last Spring Hard Freeze May 25
First Fall Hard Freeze September 1
63.96°N, 145.10°W © OpenStreetMap

Growing Season

77 Days June 5 to August 21

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 1b

Avg. annual minimum: −55 to −50°F

Learn more

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.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January5°-4°-13°
February15°4°-8°
March26°11°-4°
April46°32°17°
May61°46°32°
June70°57°43°
July71°59°46°
August66°53°40°
September55°42°30°
October34°25°15°
November14°6°-2°
December8°-1°-9°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.6
February1.5
March0.5
April1.0
May2.8
June3.3
July3.2
August2.9
September2.2
October2.0
November2.0
December1.6

Sunrise / Sunset

Daylight Alaska Time (AKT) Longest: 20h 21m · Shortest: 3h 39m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Alaska Time (AKT))
Month Sunrise Sunset Daylight
January10:21 AM3:18 PM4h 57m
February8:51 AM4:59 PM8h 09m
March8:13 AM7:27 PM11h 14m
April6:21 AM9:00 PM14h 39m
May4:40 AM10:33 PM17h 53m
June3:33 AM11:48 PM20h 15m
July4:11 AM11:21 PM19h 11m
August5:44 AM9:45 PM16h 01m
September7:17 AM7:53 PM12h 36m
October8:47 AM6:05 PM9h 18m
November9:27 AM3:24 PM5h 58m
December10:44 AM2:28 PM3h 44m

Nearby Stations

Delta 5 Ne, AKJune 4 - August 22 Big Delta AP, AK May 17 - September 7 Delta 6 N, AK Dry Creek, AKMay 30 - August 24 Whitestone Farms, AK May 26 - September 2 Paxson, AK

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