Frost Dates for Two Rivers, AK

Elevation: 184 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. May 30
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 2

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 3
First Fall Frost August 25

Hard Freeze (28°F)

Last Spring Hard Freeze May 16
First Fall Hard Freeze September 16
64.87°N, 146.95°W © OpenStreetMap

Growing Season

95 Days May 30 to September 2

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 2a

Avg. annual minimum: −50 to −45°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

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
January6°-3°-13°
February18°7°-5°
March29°15°1°
April49°35°22°
May65°49°34°
June74°60°45°
July75°62°49°
August68°56°44°
September56°45°34°
October36°27°18°
November16°7°-2°
December9°-1°-10°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.5
February1.4
March1.9
April1.8
May1.7
June2.9
July3.0
August2.7
September2.6
October2.3
November1.5
December1.3

Sunrise / Sunset

Daylight Longest: 21h 01m · Shortest: 2h 59m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January9:44 AM2:16 PM4h 31m
February8:01 AM3:59 PM7h 58m
March6:24 AM5:36 PM11h 12m
April4:37 AM7:23 PM14h 46m
May2:54 AM9:06 PM18h 12m
June1:33 AM10:27 PM20h 54m
July2:11 AM9:49 PM19h 37m
August3:54 AM8:06 PM16h 12m
September5:41 AM6:19 PM12h 38m
October7:25 AM4:35 PM9h 11m
November9:11 AM2:49 PM5h 38m
December10:27 AM1:33 PM3h 05m

Nearby Stations

N Pole, AKMay 18 - September 5 N Pole 1n, AKMay 22 - September 2 Eielson Fld, AK May 20 - September 1 Ft Knox Mine, AK May 12 - September 17 Fairbanks 11 Ne, AK May 12 - September 16 Gilmore Creek, AK June 1 - August 28

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