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🍂 First Frost Dates for Wenatchee, Washington 98801

The first 36°F frost date is 30% likely to be on Sep 24. (See detailed probabilities below.)

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

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Wenatchee, 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 17
20% chanceSep 21
30% chanceSep 24
40% chanceSep 26
50% chanceSep 28
60% chanceSep 30
70% chanceOct 2
80% chanceOct 5
90% chanceOct 9
Probability of light freeze (32°F) on or before...
10% chanceSep 27
20% chanceOct 1
30% chanceOct 3
40% chanceOct 6
50% chanceOct 8
60% chanceOct 11
70% chanceOct 14
80% chanceOct 17
90% chanceOct 20
Probability of moderate freeze (28°F) on or before...
10% chanceOct 6
20% chanceOct 11
30% chanceOct 16
40% chanceOct 18
50% chanceOct 21
60% chanceOct 24
70% chanceOct 27
80% chanceOct 30
90% chanceNov 4
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 18
20% chanceOct 23
30% chanceOct 28
40% chanceOct 31
50% chanceNov 3
60% chanceNov 8
70% chanceNov 12
80% chanceNov 18
90% chanceNov 25
Probability of hard freeze (20°F) on or before...
10% chanceOct 28
20% chanceNov 4
30% chanceNov 11
40% chanceNov 16
50% chanceNov 22
60% chanceNov 27
70% chanceDec 1
80% chanceDec 7
90% chanceDec 16
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 10
20% chanceNov 21
30% chanceNov 27
40% chanceDec 2
50% chanceDec 6
60% chanceDec 11
70% chanceDec 18
80% chanceDec 25
90% chanceJan 5

Agricultural climatic data from weather station: WENATCHEE EXP STN (USC00459079)

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