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🍂 First Frost Dates for Donaldson, Indiana 46513

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

The first 32°F light freeze date is 30% likely to be on Oct 9. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Donaldson, IN 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 23
20% chanceSep 27
30% chanceSep 30
40% chanceOct 1
50% chanceOct 4
60% chanceOct 6
70% chanceOct 9
80% chanceOct 12
90% chanceOct 17
Probability of light freeze (32°F) on or before...
10% chanceOct 2
20% chanceOct 6
30% chanceOct 9
40% chanceOct 12
50% chanceOct 14
60% chanceOct 17
70% chanceOct 21
80% chanceOct 25
90% chanceOct 31
Probability of moderate freeze (28°F) on or before...
10% chanceOct 11
20% chanceOct 16
30% chanceOct 20
40% chanceOct 24
50% chanceOct 26
60% chanceOct 30
70% chanceNov 1
80% chanceNov 5
90% chanceNov 11
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 22
20% chanceOct 29
30% chanceNov 1
40% chanceNov 4
50% chanceNov 7
60% chanceNov 10
70% chanceNov 14
80% chanceNov 19
90% chanceNov 25
Probability of hard freeze (20°F) on or before...
10% chanceNov 1
20% chanceNov 7
30% chanceNov 12
40% chanceNov 16
50% chanceNov 21
60% chanceNov 25
70% chanceNov 29
80% chanceDec 2
90% chanceDec 8
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 13
20% chanceNov 20
30% chanceNov 25
40% chanceNov 29
50% chanceDec 1
60% chanceDec 5
70% chanceDec 9
80% chanceDec 13
90% chanceDec 20

Agricultural climatic data from weather station: PLYMOUTH (USC00126989)

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