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🍂 First Frost Dates for Persia, Iowa 51563

The first 36°F frost date is 30% likely to be on Sep 21. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 28. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Persia, IA 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 13
20% chanceSep 18
30% chanceSep 21
40% chanceSep 23
50% chanceSep 26
60% chanceSep 28
70% chanceSep 30
80% chanceOct 3
90% chanceOct 7
Probability of light freeze (32°F) on or before...
10% chanceSep 19
20% chanceSep 24
30% chanceSep 28
40% chanceSep 30
50% chanceOct 3
60% chanceOct 5
70% chanceOct 8
80% chanceOct 12
90% chanceOct 17
Probability of moderate freeze (28°F) on or before...
10% chanceSep 28
20% chanceOct 3
30% chanceOct 7
40% chanceOct 11
50% chanceOct 14
60% chanceOct 17
70% chanceOct 20
80% chanceOct 24
90% chanceOct 29
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 14
30% chanceOct 18
40% chanceOct 22
50% chanceOct 25
60% chanceOct 28
70% chanceOct 31
80% chanceNov 3
90% chanceNov 8
Probability of hard freeze (20°F) on or before...
10% chanceOct 18
20% chanceOct 23
30% chanceOct 28
40% chanceNov 1
50% chanceNov 3
60% chanceNov 5
70% chanceNov 9
80% chanceNov 13
90% chanceNov 18
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 28
20% chanceNov 2
30% chanceNov 6
40% chanceNov 9
50% chanceNov 12
60% chanceNov 15
70% chanceNov 19
80% chanceNov 24
90% chanceNov 30

Agricultural climatic data from weather station: LOGAN (USC00134894)

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