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🍂 First Frost Dates for Decatur, Alabama 35603

The first 36°F frost date is 30% likely to be on Oct 17. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 26. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Decatur, AL 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 8
20% chanceOct 13
30% chanceOct 17
40% chanceOct 19
50% chanceOct 22
60% chanceOct 24
70% chanceOct 27
80% chanceNov 1
90% chanceNov 5
Probability of light freeze (32°F) on or before...
10% chanceOct 18
20% chanceOct 23
30% chanceOct 26
40% chanceOct 29
50% chanceNov 1
60% chanceNov 4
70% chanceNov 7
80% chanceNov 11
90% chanceNov 18
Probability of moderate freeze (28°F) on or before...
10% chanceOct 28
20% chanceNov 1
30% chanceNov 5
40% chanceNov 9
50% chanceNov 13
60% chanceNov 17
70% chanceNov 22
80% chanceNov 29
90% chanceDec 4
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 7
20% chanceNov 14
30% chanceNov 20
40% chanceNov 26
50% chanceDec 1
60% chanceDec 3
70% chanceDec 7
80% chanceDec 14
90% chanceDec 24
Probability of hard freeze (20°F) on or before...
10% chanceNov 21
20% chanceDec 1
30% chanceDec 5
40% chanceDec 10
50% chanceDec 15
60% chanceDec 21
70% chanceDec 27
80% chanceJan 1
90% chanceJan 11
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 5
20% chanceDec 12
30% chanceDec 18
40% chanceDec 24
50% chanceDec 29
60% chanceJan 2
70% chanceJan 8
80% chanceJan 16
90% chanceJan 27

Agricultural climatic data from weather station: DECATUR PRYOR FLD (USW00053852)

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