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🍂 First Frost Dates for Gunpowder, Maryland 21010

The first 36°F frost date is 30% likely to be on Oct 16. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 28. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Gunpowder, 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 6
20% chanceOct 12
30% chanceOct 16
40% chanceOct 19
50% chanceOct 22
60% chanceOct 25
70% chanceOct 29
80% chanceNov 1
90% chanceNov 5
Probability of light freeze (32°F) on or before...
10% chanceOct 18
20% chanceOct 24
30% chanceOct 28
40% chanceNov 1
50% chanceNov 3
60% chanceNov 5
70% chanceNov 8
80% chanceNov 12
90% chanceNov 17
Probability of moderate freeze (28°F) on or before...
10% chanceOct 30
20% chanceNov 3
30% chanceNov 7
40% chanceNov 11
50% chanceNov 13
60% chanceNov 17
70% chanceNov 20
80% chanceNov 24
90% chanceDec 1
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 10
20% chanceNov 16
30% chanceNov 20
40% chanceNov 24
50% chanceNov 28
60% chanceDec 1
70% chanceDec 5
80% chanceDec 9
90% chanceDec 16
Probability of hard freeze (20°F) on or before...
10% chanceNov 23
20% chanceNov 30
30% chanceDec 3
40% chanceDec 8
50% chanceDec 12
60% chanceDec 16
70% chanceDec 20
80% chanceDec 25
90% chanceDec 31
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 5
20% chanceDec 11
30% chanceDec 16
40% chanceDec 21
50% chanceDec 26
60% chanceDec 30
70% chanceJan 3
80% chanceJan 10
90% chanceJan 21

Agricultural climatic data from weather station: BENSON POLICE BARRACKS (USC00180732)

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