🌷 Last Frost Dates for Beaverton, Oregon 97003

The last 36°F Spring frost date is 30% likely to be on May 8. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on Apr 16. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Beaverton, OR are based on historical climate data.

Always check your local forecast for the most up-to-date frost warnings.

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 20
20% chanceMay 13
30% chanceMay 8
40% chanceMay 4
50% chanceMay 1
60% chanceApr 28
70% chanceApr 25
80% chanceApr 19
90% chanceApr 11
Probability of light freeze (32°F) on or after…
10% chanceApr 30
20% chanceApr 22
30% chanceApr 16
40% chanceApr 11
50% chanceApr 5
60% chanceApr 1
70% chanceMar 28
80% chanceMar 22
90% chanceMar 12
Probability of moderate freeze (28°F) on or after…
10% chanceMar 31
20% chanceMar 24
30% chanceMar 17
40% chanceMar 10
50% chanceMar 1
60% chanceFeb 24
70% chanceFeb 18
80% chanceFeb 10
90% chanceJan 30
Probability of moderate hard freeze (24°F) on or after…
10% chanceMar 2
20% chanceFeb 23
30% chanceFeb 16
40% chanceFeb 10
50% chanceFeb 4
60% chanceJan 30
70% chanceJan 16
80% chanceJan 6
90% chanceDec 26
Probability of hard freeze (20°F) on or after…
10% chanceFeb 20
20% chanceFeb 12
30% chanceFeb 6
40% chanceFeb 1
50% chanceJan 21
60% chanceJan 9
70% chanceJan 2
80% chanceDec 27
90% chanceDec 13
Probability of severe hard freeze (16°F) on or after…
10% chanceFeb 18
20% chanceFeb 9
30% chanceFeb 3
40% chanceJan 23
50% chanceJan 7
60% chanceJan 2
70% chanceDec 30
80% chanceDec 23
90% chanceDec 11

Agricultural climatic data from weather station: BEAVERTON 2 SSW (USC00350595)