๐Ÿ‚ First Frost Dates for Benson, Arizona 85602

The first 36ยฐF frost date is 30% likely to be on Oct 16. (See detailed probabilities below.)

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

(See also ๐ŸŒท Last Spring Frost Dates.)

First frost date probabilities for Benson, AZ are based on historical climate data.

Always check your local forecast for the most up-to-date frost warnings.

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 sweaterโ€”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 (36ยฐF) on or before...
10% chanceOct 8
20% chanceOct 12
30% chanceOct 16
40% chanceOct 19
50% chanceOct 22
60% chanceOct 25
70% chanceOct 28
80% chanceOct 31
90% chanceNov 5
Probability of light freeze (32ยฐF) on or before...
10% chanceOct 15
20% chanceOct 20
30% chanceOct 24
40% chanceOct 27
50% chanceOct 30
60% chanceNov 3
70% chanceNov 6
80% chanceNov 10
90% chanceNov 15
Probability of moderate freeze (28ยฐF) on or before...
10% chanceOct 23
20% chanceOct 29
30% chanceNov 2
40% chanceNov 6
50% chanceNov 10
60% chanceNov 13
70% chanceNov 16
80% chanceNov 19
90% chanceNov 25
Probability of moderate hard freeze (24ยฐF) on or before...
10% chanceNov 4
20% chanceNov 10
30% chanceNov 14
40% chanceNov 18
50% chanceNov 21
60% chanceNov 24
70% chanceNov 28
80% chanceDec 2
90% chanceDec 8
Probability of hard freeze (20ยฐF) on or before...
10% chanceNov 16
20% chanceNov 22
30% chanceNov 26
40% chanceNov 30
50% chanceDec 3
60% chanceDec 7
70% chanceDec 12
80% chanceDec 20
90% chanceDec 30
Probability of severe hard freeze (16ยฐF) on or before...
10% chanceNov 26
20% chanceDec 1
30% chanceDec 6
40% chanceDec 11
50% chanceDec 18
60% chanceDec 25
70% chanceDec 31
80% chanceJan 10
90% chanceJan 31

Agricultural climatic data from weather station: CASCABEL (USC00021330)