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🍂 First Frost Dates for Kirkwood, Pennsylvania 17536

The first 36°F frost date is 30% likely to be on Oct 12. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 23. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Kirkwood, 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% chanceOct 4
20% chanceOct 8
30% chanceOct 12
40% chanceOct 15
50% chanceOct 18
60% chanceOct 21
70% chanceOct 24
80% chanceOct 28
90% chanceNov 2
Probability of light freeze (32°F) on or before...
10% chanceOct 14
20% chanceOct 19
30% chanceOct 23
40% chanceOct 27
50% chanceOct 30
60% chanceNov 1
70% chanceNov 4
80% chanceNov 7
90% chanceNov 11
Probability of moderate freeze (28°F) on or before...
10% chanceOct 26
20% chanceNov 1
30% chanceNov 3
40% chanceNov 6
50% chanceNov 9
60% chanceNov 12
70% chanceNov 15
80% chanceNov 19
90% chanceNov 24
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 5
20% chanceNov 10
30% chanceNov 15
40% chanceNov 18
50% chanceNov 22
60% chanceNov 25
70% chanceNov 29
80% chanceDec 2
90% chanceDec 9
Probability of hard freeze (20°F) on or before...
10% chanceNov 16
20% chanceNov 23
30% chanceNov 28
40% chanceDec 1
50% chanceDec 5
60% chanceDec 8
70% chanceDec 13
80% chanceDec 19
90% chanceDec 26
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 1
20% chanceDec 5
30% chanceDec 10
40% chanceDec 15
50% chanceDec 20
60% chanceDec 24
70% chanceDec 28
80% chanceJan 1
90% chanceJan 9

Agricultural climatic data from weather station: CONOWINGO DAM (USC00182060)

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