🌷 Last Frost Dates for Silverton, Idaho 83867

The last 36°F Spring frost date is 30% likely to be on Jun 2. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on May 14. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Silverton, ID 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% chanceJun 13
20% chanceJun 6
30% chanceJun 2
40% chanceMay 30
50% chanceMay 27
60% chanceMay 24
70% chanceMay 21
80% chanceMay 16
90% chanceMay 11
Probability of light freeze (32°F) on or after…
10% chanceMay 24
20% chanceMay 19
30% chanceMay 14
40% chanceMay 10
50% chanceMay 7
60% chanceMay 4
70% chanceMay 2
80% chanceApr 29
90% chanceApr 23
Probability of moderate freeze (28°F) on or after…
10% chanceMay 4
20% chanceApr 30
30% chanceApr 26
40% chanceApr 21
50% chanceApr 17
60% chanceApr 12
70% chanceApr 7
80% chanceApr 2
90% chanceMar 28
Probability of moderate hard freeze (24°F) on or after…
10% chanceApr 14
20% chanceApr 6
30% chanceApr 1
40% chanceMar 29
50% chanceMar 25
60% chanceMar 20
70% chanceMar 16
80% chanceMar 10
90% chanceMar 4
Probability of hard freeze (20°F) on or after…
10% chanceMar 29
20% chanceMar 21
30% chanceMar 15
40% chanceMar 11
50% chanceMar 7
60% chanceMar 4
70% chanceFeb 28
80% chanceFeb 24
90% chanceFeb 16
Probability of severe hard freeze (16°F) on or after…
10% chanceMar 15
20% chanceMar 8
30% chanceMar 4
40% chanceMar 1
50% chanceFeb 26
60% chanceFeb 21
70% chanceFeb 16
80% chanceFeb 9
90% chanceFeb 1

Agricultural climatic data from weather station: WALLACE (USC00109498)