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🍂 First Frost Dates for Riverton, Connecticut 06065

The first 36°F frost date is 30% likely to be on Sep 17. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 29. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Riverton, CT 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% chanceSep 9
20% chanceSep 14
30% chanceSep 17
40% chanceSep 20
50% chanceSep 23
60% chanceSep 25
70% chanceSep 27
80% chanceSep 30
90% chanceOct 3
Probability of light freeze (32°F) on or before...
10% chanceSep 22
20% chanceSep 26
30% chanceSep 29
40% chanceOct 1
50% chanceOct 2
60% chanceOct 5
70% chanceOct 7
80% chanceOct 10
90% chanceOct 15
Probability of moderate freeze (28°F) on or before...
10% chanceOct 1
20% chanceOct 4
30% chanceOct 8
40% chanceOct 11
50% chanceOct 14
60% chanceOct 16
70% chanceOct 19
80% chanceOct 24
90% chanceOct 31
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 12
20% chanceOct 17
30% chanceOct 21
40% chanceOct 25
50% chanceOct 28
60% chanceNov 1
70% chanceNov 3
80% chanceNov 7
90% chanceNov 12
Probability of hard freeze (20°F) on or before...
10% chanceOct 26
20% chanceNov 1
30% chanceNov 4
40% chanceNov 8
50% chanceNov 12
60% chanceNov 15
70% chanceNov 19
80% chanceNov 22
90% chanceNov 28
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 10
20% chanceNov 15
30% chanceNov 19
40% chanceNov 22
50% chanceNov 25
60% chanceNov 29
70% chanceDec 2
80% chanceDec 6
90% chanceDec 12

Agricultural climatic data from weather station: BAKERSVILLE (USC00060227)

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