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🍂 First Frost Dates for Florence, Indiana 47020

The first 36°F frost date is 30% likely to be on Oct 5. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 14. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Florence, 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 28
20% chanceOct 1
30% chanceOct 5
40% chanceOct 7
50% chanceOct 10
60% chanceOct 13
70% chanceOct 16
80% chanceOct 20
90% chanceOct 26
Probability of light freeze (32°F) on or before...
10% chanceOct 5
20% chanceOct 10
30% chanceOct 14
40% chanceOct 17
50% chanceOct 21
60% chanceOct 24
70% chanceOct 28
80% chanceNov 1
90% chanceNov 4
Probability of moderate freeze (28°F) on or before...
10% chanceOct 14
20% chanceOct 20
30% chanceOct 25
40% chanceOct 28
50% chanceNov 1
60% chanceNov 3
70% chanceNov 6
80% chanceNov 9
90% chanceNov 15
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 24
20% chanceOct 31
30% chanceNov 3
40% chanceNov 6
50% chanceNov 10
60% chanceNov 13
70% chanceNov 17
80% chanceNov 22
90% chanceNov 29
Probability of hard freeze (20°F) on or before...
10% chanceNov 3
20% chanceNov 9
30% chanceNov 15
40% chanceNov 19
50% chanceNov 23
60% chanceNov 28
70% chanceDec 1
80% chanceDec 6
90% chanceDec 13
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 15
20% chanceNov 23
30% chanceNov 29
40% chanceDec 2
50% chanceDec 6
60% chanceDec 10
70% chanceDec 15
80% chanceDec 21
90% chanceDec 27

Agricultural climatic data from weather station: WARSAW MARKLAND DAM (USC00158446)

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