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🍂 First Frost Dates for East Prospect, Pennsylvania 17317

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 East Prospect, 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 1
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 4
30% chanceOct 6
40% chanceOct 9
50% chanceOct 12
60% chanceOct 15
70% chanceOct 18
80% chanceOct 23
90% chanceOct 30
Probability of moderate freeze (28°F) on or before...
10% chanceOct 9
20% chanceOct 14
30% chanceOct 18
40% chanceOct 22
50% chanceOct 25
60% chanceOct 29
70% chanceNov 1
80% chanceNov 4
90% chanceNov 9
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 21
20% chanceOct 27
30% chanceNov 1
40% chanceNov 4
50% chanceNov 7
60% chanceNov 10
70% chanceNov 14
80% chanceNov 19
90% chanceNov 25
Probability of hard freeze (20°F) on or before...
10% chanceNov 5
20% chanceNov 11
30% chanceNov 16
40% chanceNov 19
50% chanceNov 22
60% chanceNov 27
70% chanceDec 1
80% chanceDec 4
90% chanceDec 10
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 17
20% chanceNov 24
30% chanceDec 1
40% chanceDec 3
50% chanceDec 6
60% chanceDec 9
70% chanceDec 14
80% chanceDec 19
90% chanceDec 24

Agricultural climatic data from weather station: LANDISVILLE 2 NW (USC00364778)

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