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🍂 First Frost Dates for Dewey, Arizona 86327

The first 36°F frost date is 30% likely to be on Nov 5. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 17. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Dewey, AZ 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 24
20% chanceOct 31
30% chanceNov 5
40% chanceNov 9
50% chanceNov 13
60% chanceNov 17
70% chanceNov 20
80% chanceNov 24
90% chanceDec 1
Probability of light freeze (32°F) on or before...
10% chanceNov 6
20% chanceNov 13
30% chanceNov 17
40% chanceNov 21
50% chanceNov 24
60% chanceNov 28
70% chanceDec 2
80% chanceDec 7
90% chanceDec 13
Probability of moderate freeze (28°F) on or before...
10% chanceNov 18
20% chanceNov 24
30% chanceNov 29
40% chanceDec 2
50% chanceDec 6
60% chanceDec 11
70% chanceDec 16
80% chanceDec 22
90% chanceDec 30
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 29
20% chanceDec 6
30% chanceDec 12
40% chanceDec 18
50% chanceDec 24
60% chanceDec 30
70% chanceJan 5
80% chanceJan 14
90% chanceJan 28
Probability of hard freeze (20°F) on or before...
10% chanceDec 10
20% chanceDec 19
30% chanceDec 27
40% chanceJan 1
50% chanceJan 7
60% chanceJan 16
70% chanceJan 26
80% chanceFeb 1
90% chanceFeb 15
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 17
20% chanceDec 26
30% chanceDec 30
40% chanceJan 5
50% chanceJan 18
60% chanceJan 27
70% chanceFeb 1
80% chanceFeb 4
90% chanceFeb 13

Agricultural climatic data from weather station: JEROME (USC00024453)

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