Frost Dates for Hayes River, AK

Elevation: 305 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 2
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 8

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 5
First Fall Frost September 2

Hard Freeze (28°F)

Last Spring Hard Freeze May 21
First Fall Hard Freeze September 22
61.99°N, 152.08°W © OpenStreetMap

Growing Season

98 Days June 2 to September 8

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 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsc Subarctic (Dry Summer)

Cool, dry summers and cold winters. A rare climate found at high elevations. Very short growing season for cold-tolerant crops only.

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
January22°14°5°
February28°18°9°
March34°22°10°
April45°34°23°
May56°44°32°
June67°55°42°
July69°58°47°
August66°55°45°
September56°46°36°
October41°32°23°
November28°20°12°
December23°15°7°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.9
February2.3
March2.5
April1.4
May1.2
June2.4
July3.3
August3.7
September3.4
October3.4
November3.0
December3.1

Sunrise / Sunset

Daylight Longest: 19h 17m · Shortest: 4h 43m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January9:08 AM2:52 PM5h 44m
February7:45 AM4:15 PM8h 29m
March6:21 AM5:39 PM11h 18m
April4:47 AM7:13 PM14h 25m
May3:21 AM8:39 PM17h 18m
June2:24 AM9:36 PM19h 13m
July2:49 AM9:11 PM18h 23m
August4:10 AM7:50 PM15h 40m
September5:43 AM6:17 PM12h 33m
October7:14 AM4:46 PM9h 32m
November8:43 AM3:17 PM6h 34m
December9:37 AM2:23 PM4h 47m

Nearby Stations

Puntilla, AKJune 7 - September 2 Skwentna, AKMay 23 - September 9 Farewell Lake, AK May 30 - September 5 Big River Lakes, AK May 7 - October 7 Kenai 9n, AKMay 18 - September 22 Kenai Muni AP, AK May 24 - September 12

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