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🍂 First Frost Dates for Hillsdale, New York 12529

The first 36°F frost date is 30% likely to be on Sep 21. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 1. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Hillsdale, NY 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 12
20% chanceSep 18
30% chanceSep 21
40% chanceSep 24
50% chanceSep 26
60% chanceSep 29
70% chanceOct 1
80% chanceOct 3
90% chanceOct 7
Probability of light freeze (32°F) on or before...
10% chanceSep 25
20% chanceSep 29
30% chanceOct 1
40% chanceOct 3
50% chanceOct 5
60% chanceOct 8
70% chanceOct 11
80% chanceOct 15
90% chanceOct 20
Probability of moderate freeze (28°F) on or before...
10% chanceOct 3
20% chanceOct 8
30% chanceOct 11
40% chanceOct 14
50% chanceOct 18
60% chanceOct 21
70% chanceOct 24
80% chanceOct 28
90% chanceNov 2
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 15
20% chanceOct 20
30% chanceOct 24
40% chanceOct 28
50% chanceOct 31
60% chanceNov 2
70% chanceNov 5
80% chanceNov 9
90% chanceNov 15
Probability of hard freeze (20°F) on or before...
10% chanceOct 27
20% chanceNov 1
30% chanceNov 5
40% chanceNov 8
50% chanceNov 12
60% chanceNov 15
70% chanceNov 18
80% chanceNov 22
90% chanceNov 28
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 9
20% chanceNov 15
30% chanceNov 19
40% chanceNov 22
50% chanceNov 26
60% chanceNov 29
70% chanceDec 1
80% chanceDec 5
90% chanceDec 11

Agricultural climatic data from weather station: COPAKE (USC00301761)

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