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🍂 First Frost Dates for Carbonado, Washington 98323

The first 36°F frost date is 30% likely to be on Oct 5. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 22. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Carbonado, 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 27
20% chanceOct 1
30% chanceOct 5
40% chanceOct 7
50% chanceOct 11
60% chanceOct 14
70% chanceOct 18
80% chanceOct 22
90% chanceOct 28
Probability of light freeze (32°F) on or before...
10% chanceOct 11
20% chanceOct 18
30% chanceOct 22
40% chanceOct 26
50% chanceOct 29
60% chanceNov 1
70% chanceNov 4
80% chanceNov 9
90% chanceNov 16
Probability of moderate freeze (28°F) on or before...
10% chanceOct 27
20% chanceNov 1
30% chanceNov 6
40% chanceNov 10
50% chanceNov 15
60% chanceNov 20
70% chanceNov 27
80% chanceDec 3
90% chanceDec 10
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 10
20% chanceNov 19
30% chanceNov 25
40% chanceDec 1
50% chanceDec 6
60% chanceDec 12
70% chanceDec 20
80% chanceDec 30
90% chanceJan 14
Probability of hard freeze (20°F) on or before...
10% chanceNov 23
20% chanceDec 2
30% chanceDec 8
40% chanceDec 16
50% chanceDec 26
60% chanceJan 1
70% chanceJan 10
80% chanceJan 23
90% chanceFeb 5
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 2
20% chanceDec 10
30% chanceDec 18
40% chanceDec 26
50% chanceJan 1
60% chanceJan 5
70% chanceJan 16
80% chanceJan 29
90% chanceFeb 8

Agricultural climatic data from weather station: MUD MTN DAM (USC00455704)

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