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🍂 First Frost Dates for Swengel, Pennsylvania 17880

The first 36°F frost date is 30% likely to be on Sep 27. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 6. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Swengel, PA 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 19
20% chanceSep 24
30% chanceSep 27
40% chanceSep 30
50% chanceOct 2
60% chanceOct 4
70% chanceOct 6
80% chanceOct 9
90% chanceOct 14
Probability of light freeze (32°F) on or before...
10% chanceOct 1
20% chanceOct 3
30% chanceOct 6
40% chanceOct 9
50% chanceOct 12
60% chanceOct 14
70% chanceOct 17
80% chanceOct 21
90% chanceOct 26
Probability of moderate freeze (28°F) on or before...
10% chanceOct 9
20% chanceOct 14
30% chanceOct 18
40% chanceOct 21
50% chanceOct 24
60% chanceOct 27
70% chanceOct 30
80% chanceNov 2
90% chanceNov 6
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 23
20% chanceOct 28
30% chanceNov 1
40% chanceNov 3
50% chanceNov 6
60% chanceNov 9
70% chanceNov 12
80% chanceNov 15
90% chanceNov 20
Probability of hard freeze (20°F) on or before...
10% chanceNov 4
20% chanceNov 8
30% chanceNov 12
40% chanceNov 15
50% chanceNov 18
60% chanceNov 21
70% chanceNov 24
80% chanceNov 29
90% chanceDec 5
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 15
20% chanceNov 20
30% chanceNov 25
40% chanceNov 29
50% chanceDec 1
60% chanceDec 5
70% chanceDec 9
80% chanceDec 14
90% chanceDec 22

Agricultural climatic data from weather station: LAURELTON CTR (USC00364853)

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