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🍂 First Frost Dates for College Grove, Tennessee 37046

The first 36°F frost date is 30% likely to be on Oct 1. (See detailed probabilities below.)

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

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for College Grove, TN 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 28
30% chanceOct 1
40% chanceOct 4
50% chanceOct 6
60% chanceOct 10
70% chanceOct 13
80% chanceOct 17
90% chanceOct 23
Probability of light freeze (32°F) on or before...
10% chanceOct 1
20% chanceOct 6
30% chanceOct 10
40% chanceOct 14
50% chanceOct 17
60% chanceOct 21
70% chanceOct 24
80% chanceOct 28
90% chanceNov 2
Probability of moderate freeze (28°F) on or before...
10% chanceOct 12
20% chanceOct 19
30% chanceOct 22
40% chanceOct 25
50% chanceOct 29
60% chanceNov 1
70% chanceNov 4
80% chanceNov 7
90% chanceNov 13
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 24
20% chanceOct 30
30% chanceNov 2
40% chanceNov 6
50% chanceNov 9
60% chanceNov 12
70% chanceNov 16
80% chanceNov 21
90% chanceNov 29
Probability of hard freeze (20°F) on or before...
10% chanceNov 4
20% chanceNov 10
30% chanceNov 14
40% chanceNov 18
50% chanceNov 23
60% chanceNov 28
70% chanceDec 1
80% chanceDec 5
90% chanceDec 13
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 18
20% chanceNov 26
30% chanceDec 1
40% chanceDec 3
50% chanceDec 7
60% chanceDec 12
70% chanceDec 17
80% chanceDec 23
90% chanceDec 31

Agricultural climatic data from weather station: SMYRNA 6S (USC00408414)

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