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🍂 First Frost Dates for Waynesboro, Pennsylvania 17268

The first 36°F frost date is 30% likely to be on Oct 6. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 18. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Waynesboro, 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 30
20% chanceOct 3
30% chanceOct 6
40% chanceOct 10
50% chanceOct 13
60% chanceOct 16
70% chanceOct 20
80% chanceOct 23
90% chanceOct 29
Probability of light freeze (32°F) on or before...
10% chanceOct 7
20% chanceOct 13
30% chanceOct 18
40% chanceOct 22
50% chanceOct 25
60% chanceOct 28
70% chanceNov 1
80% chanceNov 3
90% chanceNov 9
Probability of moderate freeze (28°F) on or before...
10% chanceOct 18
20% chanceOct 25
30% chanceOct 29
40% chanceNov 1
50% chanceNov 4
60% chanceNov 7
70% chanceNov 11
80% chanceNov 15
90% chanceNov 21
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 30
20% chanceNov 4
30% chanceNov 9
40% chanceNov 13
50% chanceNov 17
60% chanceNov 20
70% chanceNov 24
80% chanceNov 29
90% chanceDec 4
Probability of hard freeze (20°F) on or before...
10% chanceNov 9
20% chanceNov 16
30% chanceNov 21
40% chanceNov 26
50% chanceNov 30
60% chanceDec 3
70% chanceDec 6
80% chanceDec 11
90% chanceDec 17
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 22
20% chanceNov 29
30% chanceDec 3
40% chanceDec 6
50% chanceDec 10
60% chanceDec 14
70% chanceDec 18
80% chanceDec 23
90% chanceDec 30

Agricultural climatic data from weather station: CATOCTIN MTN PARK (USC00181530)

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