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🍂 First Frost Dates for Trout Run, Pennsylvania 17771

The first 36°F frost date is 30% likely to be on Oct 4. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 14. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Trout Run, 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 29
20% chanceOct 1
30% chanceOct 4
40% chanceOct 6
50% chanceOct 8
60% chanceOct 10
70% chanceOct 13
80% chanceOct 16
90% chanceOct 20
Probability of light freeze (32°F) on or before...
10% chanceOct 6
20% chanceOct 10
30% chanceOct 14
40% chanceOct 16
50% chanceOct 19
60% chanceOct 22
70% chanceOct 25
80% chanceOct 29
90% chanceNov 2
Probability of moderate freeze (28°F) on or before...
10% chanceOct 17
20% chanceOct 22
30% chanceOct 26
40% chanceOct 28
50% chanceNov 1
60% chanceNov 3
70% chanceNov 6
80% chanceNov 10
90% chanceNov 15
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 29
20% chanceNov 3
30% chanceNov 6
40% chanceNov 10
50% chanceNov 14
60% chanceNov 17
70% chanceNov 20
80% chanceNov 24
90% chanceNov 30
Probability of hard freeze (20°F) on or before...
10% chanceNov 11
20% chanceNov 18
30% chanceNov 22
40% chanceNov 25
50% chanceNov 29
60% chanceDec 1
70% chanceDec 4
80% chanceDec 9
90% chanceDec 15
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 26
20% chanceDec 1
30% chanceDec 4
40% chanceDec 7
50% chanceDec 11
60% chanceDec 14
70% chanceDec 17
80% chanceDec 22
90% chanceDec 27

Agricultural climatic data from weather station: WILLIAMSPORT 2 (USC00369735)

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