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🍂 First Frost Dates for Fortescue, New Jersey 08321

The first 36°F frost date is 30% likely to be on Oct 6. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 15. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Fortescue, NJ 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 1
20% chanceOct 3
30% chanceOct 6
40% chanceOct 8
50% chanceOct 11
60% chanceOct 14
70% chanceOct 17
80% chanceOct 20
90% chanceOct 26
Probability of light freeze (32°F) on or before...
10% chanceOct 7
20% chanceOct 12
30% chanceOct 15
40% chanceOct 19
50% chanceOct 21
60% chanceOct 25
70% chanceOct 28
80% chanceNov 1
90% chanceNov 6
Probability of moderate freeze (28°F) on or before...
10% chanceOct 16
20% chanceOct 22
30% chanceOct 26
40% chanceOct 30
50% chanceNov 2
60% chanceNov 5
70% chanceNov 9
80% chanceNov 14
90% chanceNov 19
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 29
20% chanceNov 3
30% chanceNov 7
40% chanceNov 11
50% chanceNov 15
60% chanceNov 19
70% chanceNov 23
80% chanceNov 28
90% chanceDec 3
Probability of hard freeze (20°F) on or before...
10% chanceNov 10
20% chanceNov 17
30% chanceNov 22
40% chanceNov 26
50% chanceNov 30
60% chanceDec 2
70% chanceDec 6
80% chanceDec 11
90% chanceDec 18
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 24
20% chanceDec 1
30% chanceDec 4
40% chanceDec 8
50% chanceDec 13
60% chanceDec 17
70% chanceDec 21
80% chanceDec 25
90% chanceJan 1

Agricultural climatic data from weather station: MILLVILLE MUNI AP (USW00013735)

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