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🍂 First Frost Dates for Aurora, Oregon 97002

The first 36°F frost date is 30% likely to be on Oct 18. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 2. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Aurora, 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% chanceOct 7
20% chanceOct 13
30% chanceOct 18
40% chanceOct 21
50% chanceOct 24
60% chanceOct 27
70% chanceOct 30
80% chanceNov 3
90% chanceNov 10
Probability of light freeze (32°F) on or before...
10% chanceOct 25
20% chanceOct 30
30% chanceNov 2
40% chanceNov 6
50% chanceNov 11
60% chanceNov 16
70% chanceNov 21
80% chanceNov 27
90% chanceDec 3
Probability of moderate freeze (28°F) on or before...
10% chanceNov 7
20% chanceNov 14
30% chanceNov 21
40% chanceNov 27
50% chanceDec 2
60% chanceDec 7
70% chanceDec 12
80% chanceDec 20
90% chanceDec 29
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 19
20% chanceNov 30
30% chanceDec 7
40% chanceDec 12
50% chanceDec 19
60% chanceDec 26
70% chanceJan 1
80% chanceJan 12
90% chanceJan 31
Probability of hard freeze (20°F) on or before...
10% chanceNov 30
20% chanceDec 9
30% chanceDec 14
40% chanceDec 20
50% chanceDec 27
60% chanceJan 1
70% chanceJan 8
80% chanceJan 27
90% chanceFeb 7
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 6
20% chanceDec 11
30% chanceDec 16
40% chanceDec 20
50% chanceDec 24
60% chanceDec 29
70% chanceJan 1
80% chanceJan 21
90% chanceFeb 10

Agricultural climatic data from weather station: AURORA STATE AP (USW00094281)

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