🌷 Your Ultimate Garden Calendar!

🌷 Last Frost Dates for Hillsboro, Maryland 21641

The last 36°F Spring frost date is 30% likely to be on Apr 22. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on Apr 10. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Hillsboro, MD 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% chanceApr 30
20% chanceApr 26
30% chanceApr 22
40% chanceApr 19
50% chanceApr 17
60% chanceApr 14
70% chanceApr 11
80% chanceApr 7
90% chanceApr 3
Probability of light freeze (32°F) on or after…
10% chanceApr 18
20% chanceApr 13
30% chanceApr 10
40% chanceApr 7
50% chanceApr 4
60% chanceApr 2
70% chanceMar 31
80% chanceMar 27
90% chanceMar 22
Probability of moderate freeze (28°F) on or after…
10% chanceApr 7
20% chanceApr 2
30% chanceMar 31
40% chanceMar 28
50% chanceMar 24
60% chanceMar 21
70% chanceMar 18
80% chanceMar 15
90% chanceMar 10
Probability of moderate hard freeze (24°F) on or after…
10% chanceMar 29
20% chanceMar 23
30% chanceMar 19
40% chanceMar 16
50% chanceMar 13
60% chanceMar 10
70% chanceMar 7
80% chanceMar 3
90% chanceFeb 28
Probability of hard freeze (20°F) on or after…
10% chanceMar 17
20% chanceMar 11
30% chanceMar 7
40% chanceMar 4
50% chanceFeb 28
60% chanceFeb 26
70% chanceFeb 21
80% chanceFeb 16
90% chanceFeb 9
Probability of severe hard freeze (16°F) on or after…
10% chanceMar 7
20% chanceFeb 28
30% chanceFeb 24
40% chanceFeb 18
50% chanceFeb 13
60% chanceFeb 8
70% chanceFeb 4
80% chanceJan 31
90% chanceJan 22

Agricultural climatic data from weather station: CHESTERTOWN (USC00181750)

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