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🍂 First Frost Dates for Carson, Washington 98610

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

The first 32°F light freeze date is 30% likely to be on Sep 29. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Carson, 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% 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% chanceSep 18
20% chanceSep 25
30% chanceSep 29
40% chanceOct 1
50% chanceOct 4
60% chanceOct 7
70% chanceOct 12
80% chanceOct 17
90% chanceOct 24
Probability of moderate freeze (28°F) on or before...
10% chanceOct 2
20% chanceOct 9
30% chanceOct 16
40% chanceOct 21
50% chanceOct 26
60% chanceOct 30
70% chanceNov 3
80% chanceNov 11
90% chanceNov 24
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 25
20% chanceNov 1
30% chanceNov 7
40% chanceNov 15
50% chanceNov 23
60% chanceDec 1
70% chanceDec 6
80% chanceDec 12
90% chanceDec 23
Probability of hard freeze (20°F) on or before...
10% chanceNov 10
20% chanceNov 23
30% chanceDec 2
40% chanceDec 8
50% chanceDec 14
60% chanceDec 20
70% chanceDec 27
80% chanceJan 2
90% chanceJan 18
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 26
20% chanceDec 7
30% chanceDec 15
40% chanceDec 23
50% chanceDec 29
60% chanceJan 3
70% chanceJan 11
80% chanceJan 25
90% chanceFeb 6

Agricultural climatic data from weather station: CARSON FISH HATCHERY (USC00451160)

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