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🍂 First Frost Dates for Deer Island, Oregon 97054

The first 36°F frost date is 30% likely to be on Oct 6. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 24. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Deer Island, 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 18
20% chanceOct 1
30% chanceOct 6
40% chanceOct 10
50% chanceOct 15
60% chanceOct 18
70% chanceOct 21
80% chanceOct 25
90% chanceNov 1
Probability of light freeze (32°F) on or before...
10% chanceOct 14
20% chanceOct 20
30% chanceOct 24
40% chanceOct 28
50% chanceNov 1
60% chanceNov 3
70% chanceNov 8
80% chanceNov 14
90% chanceNov 21
Probability of moderate freeze (28°F) on or before...
10% chanceOct 29
20% chanceNov 4
30% chanceNov 10
40% chanceNov 16
50% chanceNov 21
60% chanceNov 27
70% chanceDec 1
80% chanceDec 6
90% chanceDec 12
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 13
20% chanceNov 24
30% chanceDec 1
40% chanceDec 5
50% chanceDec 10
60% chanceDec 14
70% chanceDec 20
80% chanceDec 25
90% chanceJan 3
Probability of hard freeze (20°F) on or before...
10% chanceNov 28
20% chanceDec 7
30% chanceDec 14
40% chanceDec 21
50% chanceDec 27
60% chanceJan 1
70% chanceJan 9
80% chanceJan 21
90% chanceFeb 7
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 6
20% chanceDec 14
30% chanceDec 21
40% chanceDec 27
50% chanceJan 1
60% chanceJan 9
70% chanceJan 22
80% chanceFeb 2
90% chanceFeb 13

Agricultural climatic data from weather station: SAINT HELENS RFD (USC00357466)

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