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🍂 First Frost Dates for Coffman Cove, Alaska 99918

The first 36°F frost date is 30% likely to be on Sep 27. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 14. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Coffman Cove, AK are based on historical climate data.

Always check your local forecast for the most up-to-date frost warnings.

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What is a First Frost Date?

The first fall frost signals the end of your local growing season. This date serves as an important deadline for gardeners and farmers. You'll need to complete harvesting before this point. Annuals and other tender plants will die back when frost hits, and perennial plants will enter their dormant phase for winter. Meanwhile, it's time to enjoy a cup of hot cocoa and a cozy sweater—and start planning your spring garden!

How to use the First Frost Date?

Watch your local weather forecasts in early fall to predict the first frost date. Harvest tender crops and protect vulnerable plants before frost arrives. For late-summer plantings, count backward from your area's average first frost date. This ensures your crops have enough time to mature. Keep track of when frost actually occurs in your garden each year. This helps you identify protected spots where the growing season might last longer.

First Frost Date Probabilities

Probability of frost (36°F) on or before...
10% chanceSep 18
20% chanceSep 22
30% chanceSep 27
40% chanceOct 1
50% chanceOct 4
60% chanceOct 7
70% chanceOct 11
80% chanceOct 16
90% chanceOct 22
Probability of light freeze (32°F) on or before...
10% chanceOct 1
20% chanceOct 8
30% chanceOct 14
40% chanceOct 18
50% chanceOct 23
60% chanceOct 26
70% chanceOct 30
80% chanceNov 3
90% chanceNov 9
Probability of moderate freeze (28°F) on or before...
10% chanceOct 20
20% chanceOct 27
30% chanceNov 1
40% chanceNov 5
50% chanceNov 9
60% chanceNov 13
70% chanceNov 19
80% chanceNov 25
90% chanceDec 2
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 2
20% chanceNov 9
30% chanceNov 16
40% chanceNov 22
50% chanceNov 27
60% chanceDec 2
70% chanceDec 8
80% chanceDec 17
90% chanceDec 28
Probability of hard freeze (20°F) on or before...
10% chanceNov 11
20% chanceNov 22
30% chanceNov 29
40% chanceDec 6
50% chanceDec 13
60% chanceDec 20
70% chanceDec 28
80% chanceJan 4
90% chanceJan 19
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 17
20% chanceNov 30
30% chanceDec 8
40% chanceDec 18
50% chanceDec 28
60% chanceJan 2
70% chanceJan 12
80% chanceJan 23
90% chanceFeb 8

Agricultural climatic data from weather station: KLAWOCK AP (USW00025367)

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