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🍂 First Frost Dates for Salem, Oregon 97301

The first 36°F frost date is 30% likely to be on Oct 3. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 19. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Salem, OR 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 26
20% chanceOct 1
30% chanceOct 3
40% chanceOct 6
50% chanceOct 10
60% chanceOct 13
70% chanceOct 17
80% chanceOct 21
90% chanceOct 26
Probability of light freeze (32°F) on or before...
10% chanceOct 8
20% chanceOct 15
30% chanceOct 19
40% chanceOct 23
50% chanceOct 26
60% chanceOct 30
70% chanceNov 1
80% chanceNov 8
90% chanceNov 17
Probability of moderate freeze (28°F) on or before...
10% chanceOct 23
20% chanceOct 30
30% chanceNov 3
40% chanceNov 8
50% chanceNov 13
60% chanceNov 20
70% chanceNov 29
80% chanceDec 5
90% chanceDec 13
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 6
20% chanceNov 15
30% chanceNov 25
40% chanceDec 2
50% chanceDec 7
60% chanceDec 13
70% chanceDec 20
80% chanceDec 28
90% chanceJan 5
Probability of hard freeze (20°F) on or before...
10% chanceNov 22
20% chanceDec 3
30% chanceDec 9
40% chanceDec 15
50% chanceDec 23
60% chanceDec 29
70% chanceJan 3
80% chanceJan 17
90% chanceFeb 2
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 1
20% chanceDec 10
30% chanceDec 16
40% chanceDec 23
50% chanceDec 30
60% chanceJan 4
70% chanceJan 20
80% chanceFeb 1
90% chanceFeb 11

Agricultural climatic data from weather station: SALEM MCNARY FLD (USW00024232)

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