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🍂 First Frost Dates for Dearborn, Missouri 64439

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 16. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Dearborn, MO 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 26
20% chanceOct 1
30% chanceOct 5
40% chanceOct 8
50% chanceOct 12
60% chanceOct 15
70% chanceOct 18
80% chanceOct 21
90% chanceOct 26
Probability of light freeze (32°F) on or before...
10% chanceOct 6
20% chanceOct 12
30% chanceOct 16
40% chanceOct 20
50% chanceOct 23
60% chanceOct 26
70% chanceOct 29
80% chanceNov 1
90% chanceNov 6
Probability of moderate freeze (28°F) on or before...
10% chanceOct 18
20% chanceOct 23
30% chanceOct 28
40% chanceOct 31
50% chanceNov 2
60% chanceNov 5
70% chanceNov 8
80% chanceNov 13
90% chanceNov 18
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 29
20% chanceNov 2
30% chanceNov 5
40% chanceNov 9
50% chanceNov 12
60% chanceNov 15
70% chanceNov 19
80% chanceNov 24
90% chanceNov 30
Probability of hard freeze (20°F) on or before...
10% chanceNov 4
20% chanceNov 10
30% chanceNov 15
40% chanceNov 19
50% chanceNov 22
60% chanceNov 26
70% chanceNov 30
80% chanceDec 3
90% chanceDec 9
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 12
20% chanceNov 20
30% chanceNov 25
40% chanceNov 29
50% chanceDec 1
60% chanceDec 4
70% chanceDec 8
80% chanceDec 13
90% chanceDec 19

Agricultural climatic data from weather station: KANSAS CITY INTL AP (USW00003947)

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