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🍂 First Frost Dates for Port Royal, South Carolina 29935

The first 36°F frost date is 30% likely to be on Nov 19. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Dec 1. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Port Royal, SC 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% chanceNov 8
20% chanceNov 14
30% chanceNov 19
40% chanceNov 23
50% chanceNov 27
60% chanceDec 1
70% chanceDec 3
80% chanceDec 7
90% chanceDec 14
Probability of light freeze (32°F) on or before...
10% chanceNov 20
20% chanceNov 28
30% chanceDec 1
40% chanceDec 4
50% chanceDec 8
60% chanceDec 12
70% chanceDec 17
80% chanceDec 22
90% chanceDec 30
Probability of moderate freeze (28°F) on or before...
10% chanceDec 3
20% chanceDec 8
30% chanceDec 13
40% chanceDec 17
50% chanceDec 22
60% chanceDec 27
70% chanceJan 1
80% chanceJan 7
90% chanceJan 17
Probability of moderate hard freeze (24°F) on or before...
10% chanceDec 10
20% chanceDec 17
30% chanceDec 23
40% chanceDec 29
50% chanceJan 2
60% chanceJan 7
70% chanceJan 14
80% chanceJan 22
90% chanceFeb 1
Probability of hard freeze (20°F) on or before...
10% chanceDec 15
20% chanceDec 24
30% chanceDec 29
40% chanceJan 2
50% chanceJan 6
60% chanceJan 13
70% chanceJan 19
80% chanceJan 26
90% chanceFeb 3
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 18
20% chanceDec 28
30% chanceDec 31
40% chanceJan 3
50% chanceJan 7
60% chanceJan 12
70% chanceJan 17
80% chanceJan 21
90% chanceJan 25

Agricultural climatic data from weather station: BEAUFORT WWTP (USC00380559)

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