🌷 Your Ultimate Garden Calendar!

🌷 Last Frost Dates for Oak Harbor, Washington 98277

The last 36°F Spring frost date is 30% likely to be on Apr 30. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on Apr 4. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Oak Harbor, 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 Last Frost Date?

The last spring frost signals when your area is safe from freezing temperatures. Tender plants can now grow outdoors without cold damage! This marks the beginning of the growing season. Last spring frost serves as your essential starting point for planting warm-season crops. It's also time to remove winter protection from your perennials. Enjoy the longer days and warmer weather!

How to use the Last Frost Date?

Start seeds indoors several weeks before your last frost date. This gives plants time to reach transplanting size when weather permits. Plan your outdoor planting schedule around your area's average last frost date. Plant some crops before and some after this date to protect against weather changes. Look for spots in your yard where frost stays longer or disappears earlier. Create your own frost map to use all available growing space and extend your season. Keep watching your local weather forecast to catch any surprise late frosts.

Last Frost Date Probabilities

Probability of frost (36°F) on or after…
10% chanceMay 10
20% chanceMay 4
30% chanceApr 30
40% chanceApr 27
50% chanceApr 23
60% chanceApr 18
70% chanceApr 14
80% chanceApr 10
90% chanceApr 3
Probability of light freeze (32°F) on or after…
10% chanceApr 16
20% chanceApr 8
30% chanceApr 4
40% chanceMar 31
50% chanceMar 26
60% chanceMar 21
70% chanceMar 16
80% chanceMar 10
90% chanceMar 2
Probability of moderate freeze (28°F) on or after…
10% chanceMar 18
20% chanceMar 11
30% chanceMar 4
40% chanceFeb 28
50% chanceFeb 26
60% chanceFeb 21
70% chanceFeb 16
80% chanceFeb 10
90% chanceJan 28
Probability of moderate hard freeze (24°F) on or after…
10% chanceMar 2
20% chanceFeb 25
30% chanceFeb 19
40% chanceFeb 13
50% chanceFeb 6
60% chanceJan 31
70% chanceJan 19
80% chanceJan 6
90% chanceDec 27
Probability of hard freeze (20°F) on or after…
10% chanceFeb 21
20% chanceFeb 11
30% chanceFeb 4
40% chanceJan 26
50% chanceJan 15
60% chanceJan 5
70% chanceDec 31
80% chanceDec 24
90% chanceDec 12
Probability of severe hard freeze (16°F) on or after…
10% chanceFeb 8
20% chanceJan 29
30% chanceJan 15
40% chanceJan 6
50% chanceJan 2
60% chanceDec 31
70% chanceDec 26
80% chanceDec 18
90% chanceDec 9

Agricultural climatic data from weather station: WHIDBEY ISLAND NAS (USW00024255)

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