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🍂 First Frost Dates for Haines, Alaska 99827

The first 36°F frost date is 30% likely to be on Sep 24. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 6. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Haines, 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 13
20% chanceSep 20
30% chanceSep 24
40% chanceSep 28
50% chanceOct 1
60% chanceOct 3
70% chanceOct 6
80% chanceOct 10
90% chanceOct 15
Probability of light freeze (32°F) on or before...
10% chanceSep 26
20% chanceOct 1
30% chanceOct 6
40% chanceOct 11
50% chanceOct 14
60% chanceOct 17
70% chanceOct 20
80% chanceOct 23
90% chanceOct 26
Probability of moderate freeze (28°F) on or before...
10% chanceOct 9
20% chanceOct 17
30% chanceOct 21
40% chanceOct 25
50% chanceOct 27
60% chanceOct 29
70% chanceOct 31
80% chanceNov 4
90% chanceNov 9
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 27
20% chanceOct 31
30% chanceNov 3
40% chanceNov 6
50% chanceNov 8
60% chanceNov 11
70% chanceNov 14
80% chanceNov 18
90% chanceNov 23
Probability of hard freeze (20°F) on or before...
10% chanceNov 3
20% chanceNov 8
30% chanceNov 12
40% chanceNov 15
50% chanceNov 18
60% chanceNov 21
70% chanceNov 25
80% chanceNov 30
90% chanceDec 8
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 9
20% chanceNov 15
30% chanceNov 19
40% chanceNov 22
50% chanceNov 26
60% chanceNov 30
70% chanceDec 6
80% chanceDec 13
90% chanceDec 23

Agricultural climatic data from weather station: HAINES AP (USW00025323)

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