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🍂 First Frost Dates for Chitina, Alaska 99566

A 36°F frost is always a risk here. (See detailed probabilities below.)

A 32°F light freeze is always a risk here. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Chitina, 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% chancealways
20% chancealways
30% chancealways
40% chancealways
50% chancealways
60% chancealways
70% chancealways
80% chancealways
90% chancealways
Probability of light freeze (32°F) on or before...
10% chancealways
20% chancealways
30% chancealways
40% chancealways
50% chancealways
60% chancealways
70% chancealways
80% chancealways
90% chancealways
Probability of moderate freeze (28°F) on or before...
10% chanceAug 11
20% chanceAug 16
30% chanceAug 20
40% chanceAug 23
50% chanceAug 26
60% chanceAug 29
70% chanceSep 1
80% chanceSep 3
90% chanceSep 8
Probability of moderate hard freeze (24°F) on or before...
10% chanceAug 28
20% chanceSep 1
30% chanceSep 3
40% chanceSep 6
50% chanceSep 10
60% chanceSep 14
70% chanceSep 18
80% chanceSep 22
90% chanceSep 28
Probability of hard freeze (20°F) on or before...
10% chanceSep 5
20% chanceSep 12
30% chanceSep 17
40% chanceSep 20
50% chanceSep 23
60% chanceSep 27
70% chanceSep 30
80% chanceOct 3
90% chanceOct 9
Probability of severe hard freeze (16°F) on or before...
10% chanceSep 16
20% chanceSep 22
30% chanceSep 27
40% chanceSep 30
50% chanceOct 2
60% chanceOct 5
70% chanceOct 9
80% chanceOct 13
90% chanceOct 18

Agricultural climatic data from weather station: MCCARTHY 3 SW (USC00505757)

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