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🍂 First Frost Dates for Blaine, Washington 98230

The first 36°F frost date is 30% likely to be on Oct 12. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 26. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Blaine, WA 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% chanceOct 3
20% chanceOct 7
30% chanceOct 12
40% chanceOct 16
50% chanceOct 19
60% chanceOct 23
70% chanceOct 26
80% chanceOct 31
90% chanceNov 6
Probability of light freeze (32°F) on or before...
10% chanceOct 16
20% chanceOct 22
30% chanceOct 26
40% chanceOct 31
50% chanceNov 2
60% chanceNov 7
70% chanceNov 12
80% chanceNov 18
90% chanceNov 26
Probability of moderate freeze (28°F) on or before...
10% chanceOct 29
20% chanceNov 4
30% chanceNov 11
40% chanceNov 18
50% chanceNov 24
60% chanceNov 30
70% chanceDec 4
80% chanceDec 10
90% chanceDec 20
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 11
20% chanceNov 24
30% chanceDec 1
40% chanceDec 6
50% chanceDec 13
60% chanceDec 20
70% chanceDec 26
80% chanceJan 1
90% chanceJan 16
Probability of hard freeze (20°F) on or before...
10% chanceNov 28
20% chanceDec 7
30% chanceDec 16
40% chanceDec 22
50% chanceDec 27
60% chanceJan 1
70% chanceJan 6
80% chanceJan 16
90% chanceFeb 1
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 7
20% chanceDec 17
30% chanceDec 24
40% chanceDec 28
50% chanceDec 31
60% chanceJan 3
70% chanceJan 10
80% chanceJan 20
90% chanceFeb 4

Agricultural climatic data from weather station: BLAINE (USC00450729)

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