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🍂 First Frost Dates for Marysville, Washington 98270

The first 36°F frost date is 30% likely to be on Oct 7. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 24. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Marysville, 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% chanceSep 30
20% chanceOct 4
30% chanceOct 7
40% chanceOct 11
50% chanceOct 15
60% chanceOct 18
70% chanceOct 21
80% chanceOct 26
90% chanceNov 1
Probability of light freeze (32°F) on or before...
10% chanceOct 14
20% chanceOct 19
30% chanceOct 24
40% chanceOct 27
50% chanceOct 31
60% chanceNov 3
70% chanceNov 8
80% chanceNov 13
90% chanceNov 21
Probability of moderate freeze (28°F) on or before...
10% chanceOct 29
20% chanceNov 2
30% chanceNov 9
40% chanceNov 14
50% chanceNov 21
60% chanceNov 28
70% chanceDec 3
80% chanceDec 8
90% chanceDec 17
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 12
20% chanceNov 21
30% chanceNov 30
40% chanceDec 5
50% chanceDec 10
60% chanceDec 18
70% chanceDec 27
80% chanceJan 1
90% chanceJan 19
Probability of hard freeze (20°F) on or before...
10% chanceNov 27
20% chanceDec 5
30% chanceDec 11
40% chanceDec 18
50% chanceDec 26
60% chanceDec 31
70% chanceJan 3
80% chanceJan 17
90% chanceFeb 2
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 5
20% chanceDec 14
30% chanceDec 21
40% chanceDec 26
50% chanceDec 30
60% chanceJan 1
70% chanceJan 4
80% chanceJan 13
90% chanceJan 30

Agricultural climatic data from weather station: EVERETT (USC00452675)

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