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🍂 First Frost Dates for O'Brien, Florida 32071

The first 36°F frost date is 30% likely to be on Nov 2. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 13. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for O'Brien, FL 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 23
20% chanceOct 30
30% chanceNov 2
40% chanceNov 5
50% chanceNov 9
60% chanceNov 12
70% chanceNov 17
80% chanceNov 21
90% chanceDec 1
Probability of light freeze (32°F) on or before...
10% chanceNov 2
20% chanceNov 7
30% chanceNov 13
40% chanceNov 17
50% chanceNov 21
60% chanceNov 26
70% chanceDec 1
80% chanceDec 5
90% chanceDec 13
Probability of moderate freeze (28°F) on or before...
10% chanceNov 15
20% chanceNov 23
30% chanceNov 29
40% chanceDec 2
50% chanceDec 6
60% chanceDec 10
70% chanceDec 17
80% chanceDec 25
90% chanceJan 5
Probability of moderate hard freeze (24°F) on or before...
10% chanceDec 1
20% chanceDec 5
30% chanceDec 11
40% chanceDec 16
50% chanceDec 22
60% chanceDec 28
70% chanceJan 3
80% chanceJan 12
90% chanceJan 27
Probability of hard freeze (20°F) on or before...
10% chanceDec 8
20% chanceDec 15
30% chanceDec 22
40% chanceDec 27
50% chanceJan 1
60% chanceJan 5
70% chanceJan 12
80% chanceJan 23
90% chanceFeb 4
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 12
20% chanceDec 20
30% chanceDec 27
40% chanceJan 1
50% chanceJan 4
60% chanceJan 8
70% chanceJan 16
80% chanceJan 25
90% chanceFeb 3

Agricultural climatic data from weather station: MAYO (USC00085539)

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