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🍂 First Frost Dates for Irvine, Pennsylvania 16329

The first 36°F frost date is 30% likely to be on Oct 1. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 11. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Irvine, 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 22
20% chanceSep 27
30% chanceOct 1
40% chanceOct 2
50% chanceOct 5
60% chanceOct 7
70% chanceOct 10
80% chanceOct 14
90% chanceOct 19
Probability of light freeze (32°F) on or before...
10% chanceOct 3
20% chanceOct 8
30% chanceOct 11
40% chanceOct 15
50% chanceOct 18
60% chanceOct 22
70% chanceOct 25
80% chanceOct 30
90% chanceNov 3
Probability of moderate freeze (28°F) on or before...
10% chanceOct 16
20% chanceOct 22
30% chanceOct 26
40% chanceOct 29
50% chanceNov 1
60% chanceNov 4
70% chanceNov 7
80% chanceNov 11
90% chanceNov 16
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 27
20% chanceNov 1
30% chanceNov 6
40% chanceNov 10
50% chanceNov 13
60% chanceNov 16
70% chanceNov 20
80% chanceNov 24
90% chanceNov 29
Probability of hard freeze (20°F) on or before...
10% chanceNov 5
20% chanceNov 13
30% chanceNov 18
40% chanceNov 22
50% chanceNov 26
60% chanceNov 30
70% chanceDec 2
80% chanceDec 6
90% chanceDec 12
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 18
20% chanceNov 26
30% chanceNov 30
40% chanceDec 3
50% chanceDec 6
60% chanceDec 9
70% chanceDec 13
80% chanceDec 17
90% chanceDec 23

Agricultural climatic data from weather station: WARREN (USC00369298)

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