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🍂 First Frost Dates for Portland, Arkansas 71663

The first 36°F frost date is 30% likely to be on Oct 26. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Nov 3. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Portland, AR 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% chanceOct 17
20% chanceOct 22
30% chanceOct 26
40% chanceOct 30
50% chanceNov 1
60% chanceNov 4
70% chanceNov 6
80% chanceNov 10
90% chanceNov 17
Probability of light freeze (32°F) on or before...
10% chanceOct 25
20% chanceOct 31
30% chanceNov 3
40% chanceNov 6
50% chanceNov 9
60% chanceNov 13
70% chanceNov 18
80% chanceNov 23
90% chanceNov 30
Probability of moderate freeze (28°F) on or before...
10% chanceNov 2
20% chanceNov 8
30% chanceNov 14
40% chanceNov 18
50% chanceNov 23
60% chanceNov 27
70% chanceDec 1
80% chanceDec 5
90% chanceDec 12
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 14
20% chanceNov 23
30% chanceNov 29
40% chanceDec 2
50% chanceDec 5
60% chanceDec 10
70% chanceDec 15
80% chanceDec 23
90% chanceJan 1
Probability of hard freeze (20°F) on or before...
10% chanceDec 1
20% chanceDec 5
30% chanceDec 10
40% chanceDec 15
50% chanceDec 20
60% chanceDec 26
70% chanceJan 1
80% chanceJan 8
90% chanceJan 19
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 9
20% chanceDec 14
30% chanceDec 20
40% chanceDec 25
50% chanceDec 30
60% chanceJan 3
70% chanceJan 9
80% chanceJan 17
90% chanceJan 29

Agricultural climatic data from weather station: PORTLAND (USC00035866)

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