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🍂 First Frost Dates for Moultonborough, New Hampshire 03254

The first 36°F frost date is 30% likely to be on Sep 7. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 20. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Moultonborough, NH 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 1
20% chanceSep 4
30% chanceSep 7
40% chanceSep 10
50% chanceSep 14
60% chanceSep 16
70% chanceSep 20
80% chanceSep 23
90% chanceSep 28
Probability of light freeze (32°F) on or before...
10% chanceSep 10
20% chanceSep 16
30% chanceSep 20
40% chanceSep 23
50% chanceSep 26
60% chanceSep 29
70% chanceOct 1
80% chanceOct 4
90% chanceOct 8
Probability of moderate freeze (28°F) on or before...
10% chanceSep 23
20% chanceSep 28
30% chanceOct 1
40% chanceOct 4
50% chanceOct 7
60% chanceOct 9
70% chanceOct 12
80% chanceOct 16
90% chanceOct 21
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 4
20% chanceOct 10
30% chanceOct 14
40% chanceOct 18
50% chanceOct 20
60% chanceOct 24
70% chanceOct 27
80% chanceNov 1
90% chanceNov 6
Probability of hard freeze (20°F) on or before...
10% chanceOct 22
20% chanceOct 28
30% chanceNov 1
40% chanceNov 3
50% chanceNov 7
60% chanceNov 10
70% chanceNov 13
80% chanceNov 17
90% chanceNov 21
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 6
20% chanceNov 11
30% chanceNov 15
40% chanceNov 17
50% chanceNov 20
60% chanceNov 23
70% chanceNov 25
80% chanceNov 28
90% chanceDec 2

Agricultural climatic data from weather station: TAMWORTH 4 (USC00278614)

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