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🍂 First Frost Dates for Westland, Pennsylvania 15378

The first 36°F frost date is 30% likely to be on Sep 24. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 4. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Westland, 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 15
20% chanceSep 21
30% chanceSep 24
40% chanceSep 27
50% chanceSep 30
60% chanceOct 1
70% chanceOct 4
80% chanceOct 7
90% chanceOct 12
Probability of light freeze (32°F) on or before...
10% chanceSep 28
20% chanceOct 1
30% chanceOct 4
40% chanceOct 7
50% chanceOct 10
60% chanceOct 13
70% chanceOct 17
80% chanceOct 21
90% chanceOct 26
Probability of moderate freeze (28°F) on or before...
10% chanceOct 6
20% chanceOct 12
30% chanceOct 16
40% chanceOct 20
50% chanceOct 23
60% chanceOct 27
70% chanceOct 30
80% chanceNov 2
90% chanceNov 8
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 17
20% chanceOct 23
30% chanceOct 28
40% chanceNov 1
50% chanceNov 3
60% chanceNov 6
70% chanceNov 10
80% chanceNov 15
90% chanceNov 21
Probability of hard freeze (20°F) on or before...
10% chanceOct 28
20% chanceNov 3
30% chanceNov 8
40% chanceNov 12
50% chanceNov 16
60% chanceNov 21
70% chanceNov 26
80% chanceDec 1
90% chanceDec 6
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 10
20% chanceNov 16
30% chanceNov 22
40% chanceNov 27
50% chanceDec 1
60% chanceDec 3
70% chanceDec 7
80% chanceDec 12
90% chanceDec 20

Agricultural climatic data from weather station: WASHINGTON 3 NE (USC00369318)

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