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🍂 First Frost Dates for Washburn, Maine 04786

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

The first 32°F light freeze date is 30% likely to be on Sep 21. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Washburn, ME 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% chanceAug 31
20% chanceSep 3
30% chanceSep 6
40% chanceSep 9
50% chanceSep 12
60% chanceSep 16
70% chanceSep 19
80% chanceSep 22
90% chanceSep 26
Probability of light freeze (32°F) on or before...
10% chanceSep 12
20% chanceSep 17
30% chanceSep 21
40% chanceSep 24
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 26
20% chanceSep 30
30% chanceOct 3
40% chanceOct 5
50% chanceOct 8
60% chanceOct 11
70% chanceOct 14
80% chanceOct 18
90% chanceOct 24
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 13
30% chanceOct 17
40% chanceOct 21
50% chanceOct 24
60% chanceOct 27
70% chanceOct 30
80% chanceNov 2
90% chanceNov 6
Probability of hard freeze (20°F) on or before...
10% chanceOct 23
20% chanceOct 29
30% chanceNov 1
40% chanceNov 3
50% chanceNov 5
60% chanceNov 8
70% chanceNov 11
80% chanceNov 14
90% chanceNov 19
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 4
20% chanceNov 8
30% chanceNov 11
40% chanceNov 14
50% chanceNov 16
60% chanceNov 19
70% chanceNov 21
80% chanceNov 24
90% chanceNov 28

Agricultural climatic data from weather station: CARIBOU MUNI AP (USW00014607)

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