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🍂 First Frost Dates for North Sandwich, New Hampshire 03259

A 36°F frost is always a risk here. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 11. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for North Sandwich, 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% chancealways
20% chancealways
30% chancealways
40% chancealways
50% chancealways
60% chancealways
70% chancealways
80% chancealways
90% chancealways
Probability of light freeze (32°F) on or before...
10% chanceSep 1
20% chanceSep 6
30% chanceSep 11
40% chanceSep 15
50% chanceSep 19
60% chanceSep 22
70% chanceSep 25
80% chanceSep 29
90% chanceOct 2
Probability of moderate freeze (28°F) on or before...
10% chanceSep 17
20% chanceSep 23
30% chanceSep 27
40% chanceSep 30
50% chanceOct 2
60% chanceOct 4
70% chanceOct 7
80% chanceOct 10
90% chanceOct 14
Probability of moderate hard freeze (24°F) on or before...
10% chanceSep 30
20% chanceOct 4
30% chanceOct 7
40% chanceOct 10
50% chanceOct 13
60% chanceOct 16
70% chanceOct 19
80% chanceOct 23
90% chanceOct 31
Probability of hard freeze (20°F) on or before...
10% chanceOct 11
20% chanceOct 16
30% chanceOct 20
40% chanceOct 23
50% chanceOct 27
60% chanceOct 31
70% chanceNov 4
80% chanceNov 9
90% chanceNov 16
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 26
20% chanceNov 1
30% chanceNov 6
40% chanceNov 11
50% chanceNov 15
60% chanceNov 19
70% chanceNov 23
80% chanceNov 27
90% chanceDec 1

Agricultural climatic data from weather station: TAMWORTH 3 (USC00278612)

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