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🍂 First Frost Dates for Clinton, Maryland 20735

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

The first 32°F light freeze date is 30% likely to be on Nov 10. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Clinton, MD 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 22
20% chanceOct 26
30% chanceOct 30
40% chanceNov 1
50% chanceNov 4
60% chanceNov 7
70% chanceNov 10
80% chanceNov 13
90% chanceNov 18
Probability of light freeze (32°F) on or before...
10% chanceNov 2
20% chanceNov 6
30% chanceNov 10
40% chanceNov 13
50% chanceNov 17
60% chanceNov 20
70% chanceNov 23
80% chanceNov 28
90% chanceDec 3
Probability of moderate freeze (28°F) on or before...
10% chanceNov 13
20% chanceNov 19
30% chanceNov 24
40% chanceNov 28
50% chanceDec 1
60% chanceDec 4
70% chanceDec 7
80% chanceDec 12
90% chanceDec 19
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 29
20% chanceDec 2
30% chanceDec 6
40% chanceDec 10
50% chanceDec 14
60% chanceDec 17
70% chanceDec 22
80% chanceDec 26
90% chanceJan 1
Probability of hard freeze (20°F) on or before...
10% chanceDec 8
20% chanceDec 13
30% chanceDec 18
40% chanceDec 22
50% chanceDec 26
60% chanceDec 30
70% chanceJan 3
80% chanceJan 10
90% chanceJan 20
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 14
20% chanceDec 22
30% chanceDec 28
40% chanceJan 1
50% chanceJan 6
60% chanceJan 11
70% chanceJan 17
80% chanceJan 23
90% chanceFeb 1

Agricultural climatic data from weather station: WASHINGTON REAGAN AP (USW00013743)

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