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🍂 First Frost Dates for Nantucket, Massachusetts 02584

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

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

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Nantucket, MA 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 10
20% chanceOct 15
30% chanceOct 19
40% chanceOct 22
50% chanceOct 25
60% chanceOct 28
70% chanceOct 31
80% chanceNov 3
90% chanceNov 7
Probability of light freeze (32°F) on or before...
10% chanceOct 23
20% chanceOct 29
30% chanceNov 1
40% chanceNov 5
50% chanceNov 9
60% chanceNov 12
70% chanceNov 15
80% chanceNov 19
90% chanceNov 24
Probability of moderate freeze (28°F) on or before...
10% chanceNov 6
20% chanceNov 13
30% chanceNov 18
40% chanceNov 21
50% chanceNov 24
60% chanceNov 26
70% chanceNov 29
80% chanceDec 2
90% chanceDec 7
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 19
20% chanceNov 25
30% chanceNov 29
40% chanceDec 1
50% chanceDec 4
60% chanceDec 7
70% chanceDec 11
80% chanceDec 15
90% chanceDec 21
Probability of hard freeze (20°F) on or before...
10% chanceDec 1
20% chanceDec 5
30% chanceDec 9
40% chanceDec 13
50% chanceDec 17
60% chanceDec 21
70% chanceDec 24
80% chanceDec 29
90% chanceJan 4
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 8
20% chanceDec 16
30% chanceDec 21
40% chanceDec 25
50% chanceDec 30
60% chanceJan 3
70% chanceJan 7
80% chanceJan 12
90% chanceJan 20

Agricultural climatic data from weather station: NANTUCKET MEM AP (USW00014756)

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