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🍂 First Frost Dates for Concrete, Washington 98237

The first 36°F frost date is 30% likely to be on Oct 19. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 3. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Concrete, 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 8
20% chanceOct 15
30% chanceOct 19
40% chanceOct 22
50% chanceOct 25
60% chanceOct 28
70% chanceNov 1
80% chanceNov 5
90% chanceNov 11
Probability of light freeze (32°F) on or before...
10% chanceOct 23
20% chanceOct 30
30% chanceNov 3
40% chanceNov 8
50% chanceNov 13
60% chanceNov 18
70% chanceNov 23
80% chanceNov 29
90% chanceDec 5
Probability of moderate freeze (28°F) on or before...
10% chanceNov 8
20% chanceNov 17
30% chanceNov 25
40% chanceDec 1
50% chanceDec 5
60% chanceDec 11
70% chanceDec 17
80% chanceDec 24
90% chanceDec 31
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 26
20% chanceDec 4
30% chanceDec 10
40% chanceDec 17
50% chanceDec 24
60% chanceDec 29
70% chanceJan 2
80% chanceJan 14
90% chanceJan 31
Probability of hard freeze (20°F) on or before...
10% chanceDec 1
20% chanceDec 10
30% chanceDec 18
40% chanceDec 25
50% chanceDec 29
60% chanceJan 1
70% chanceJan 7
80% chanceJan 19
90% chanceFeb 2
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 8
20% chanceDec 16
30% chanceDec 23
40% chanceDec 26
50% chanceDec 30
60% chanceJan 1
70% chanceJan 5
80% chanceJan 15
90% chanceJan 29

Agricultural climatic data from weather station: CONCRETE PPL FISH STN (USC00451679)

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