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🍂 First Frost Dates for Mayer, Arizona 86333

The first 36°F frost date is 30% likely to be on Oct 29. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 11. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Mayer, 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 20
20% chanceOct 25
30% chanceOct 29
40% chanceNov 2
50% chanceNov 5
60% chanceNov 9
70% chanceNov 13
80% chanceNov 17
90% chanceNov 22
Probability of light freeze (32°F) on or before...
10% chanceOct 29
20% chanceNov 6
30% chanceNov 11
40% chanceNov 15
50% chanceNov 18
60% chanceNov 22
70% chanceNov 25
80% chanceNov 29
90% chanceDec 4
Probability of moderate freeze (28°F) on or before...
10% chanceNov 13
20% chanceNov 20
30% chanceNov 24
40% chanceNov 28
50% chanceDec 1
60% chanceDec 4
70% chanceDec 8
80% chanceDec 12
90% chanceDec 18
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 26
20% chanceDec 2
30% chanceDec 7
40% chanceDec 11
50% chanceDec 15
60% chanceDec 20
70% chanceDec 26
80% chanceJan 1
90% chanceJan 16
Probability of hard freeze (20°F) on or before...
10% chanceDec 5
20% chanceDec 11
30% chanceDec 15
40% chanceDec 21
50% chanceDec 28
60% chanceJan 3
70% chanceJan 15
80% chanceFeb 1
90% chanceFeb 13
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 8
20% chanceDec 12
30% chanceDec 16
40% chanceDec 23
50% chanceDec 29
60% chanceJan 23
70% chanceFeb 1
80% chanceFeb 8
90% chanceFeb 17

Agricultural climatic data from weather station: CORDES (USC00022109)

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