🌷 Your Ultimate Garden Calendar!

🌷 Last Frost Dates for Milroy, Pennsylvania 17063

The last 36°F Spring frost date is 30% likely to be on May 10. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on Apr 29. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Milroy, 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 Last Frost Date?

The last spring frost signals when your area is safe from freezing temperatures. Tender plants can now grow outdoors without cold damage! This marks the beginning of the growing season. Last spring frost serves as your essential starting point for planting warm-season crops. It's also time to remove winter protection from your perennials. Enjoy the longer days and warmer weather!

How to use the Last Frost Date?

Start seeds indoors several weeks before your last frost date. This gives plants time to reach transplanting size when weather permits. Plan your outdoor planting schedule around your area's average last frost date. Plant some crops before and some after this date to protect against weather changes. Look for spots in your yard where frost stays longer or disappears earlier. Create your own frost map to use all available growing space and extend your season. Keep watching your local weather forecast to catch any surprise late frosts.

Last Frost Date Probabilities

Probability of frost (36°F) on or after…
10% chanceMay 19
20% chanceMay 14
30% chanceMay 10
40% chanceMay 7
50% chanceMay 4
60% chanceMay 1
70% chanceApr 29
80% chanceApr 25
90% chanceApr 21
Probability of light freeze (32°F) on or after…
10% chanceMay 8
20% chanceMay 2
30% chanceApr 29
40% chanceApr 25
50% chanceApr 22
60% chanceApr 19
70% chanceApr 16
80% chanceApr 12
90% chanceApr 8
Probability of moderate freeze (28°F) on or after…
10% chanceApr 23
20% chanceApr 18
30% chanceApr 14
40% chanceApr 10
50% chanceApr 7
60% chanceApr 5
70% chanceApr 2
80% chanceMar 31
90% chanceMar 25
Probability of moderate hard freeze (24°F) on or after…
10% chanceApr 10
20% chanceApr 5
30% chanceApr 2
40% chanceMar 31
50% chanceMar 27
60% chanceMar 24
70% chanceMar 20
80% chanceMar 17
90% chanceMar 12
Probability of hard freeze (20°F) on or after…
10% chanceMar 31
20% chanceMar 26
30% chanceMar 22
40% chanceMar 19
50% chanceMar 16
60% chanceMar 13
70% chanceMar 10
80% chanceMar 7
90% chanceMar 2
Probability of severe hard freeze (16°F) on or after…
10% chanceMar 22
20% chanceMar 17
30% chanceMar 14
40% chanceMar 10
50% chanceMar 7
60% chanceMar 4
70% chanceFeb 28
80% chanceFeb 25
90% chanceFeb 16

Agricultural climatic data from weather station: LEWISTOWN (USC00364992)

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