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🍂 First Frost Dates for Newport, Rhode Island 02840

The first 36°F frost date is 30% likely to be on Oct 21. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 4. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Newport, RI 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 12
20% chanceOct 17
30% chanceOct 21
40% chanceOct 25
50% chanceOct 28
60% chanceOct 31
70% chanceNov 2
80% chanceNov 5
90% chanceNov 9
Probability of light freeze (32°F) on or before...
10% chanceOct 28
20% chanceNov 1
30% chanceNov 4
40% chanceNov 6
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 7
20% chanceNov 12
30% chanceNov 15
40% chanceNov 18
50% chanceNov 21
60% chanceNov 24
70% chanceNov 27
80% chanceDec 1
90% chanceDec 5
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 16
20% chanceNov 21
30% chanceNov 25
40% chanceNov 29
50% chanceDec 1
60% chanceDec 4
70% chanceDec 7
80% chanceDec 11
90% chanceDec 17
Probability of hard freeze (20°F) on or before...
10% chanceNov 26
20% chanceDec 1
30% chanceDec 4
40% chanceDec 7
50% chanceDec 11
60% chanceDec 15
70% chanceDec 19
80% chanceDec 24
90% chanceDec 30
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 3
20% chanceDec 9
30% chanceDec 14
40% chanceDec 19
50% chanceDec 23
60% chanceDec 27
70% chanceJan 1
80% chanceJan 4
90% chanceJan 12

Agricultural climatic data from weather station: NEWPORT ROSE (USC00375215)

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