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🍂 First Frost Dates for Clara City, Minnesota 56222

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 29. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Clara City, MN 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 14
20% chanceSep 18
30% chanceSep 21
40% chanceSep 23
50% chanceSep 26
60% chanceSep 28
70% chanceOct 1
80% chanceOct 4
90% chanceOct 7
Probability of light freeze (32°F) on or before...
10% chanceSep 21
20% chanceSep 26
30% chanceSep 29
40% chanceOct 1
50% chanceOct 4
60% chanceOct 6
70% chanceOct 9
80% chanceOct 13
90% chanceOct 18
Probability of moderate freeze (28°F) on or before...
10% chanceSep 30
20% chanceOct 4
30% chanceOct 7
40% chanceOct 11
50% chanceOct 14
60% chanceOct 17
70% chanceOct 20
80% chanceOct 24
90% chanceOct 28
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 15
30% chanceOct 19
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 20
20% chanceOct 26
30% chanceOct 30
40% chanceNov 1
50% chanceNov 3
60% chanceNov 6
70% chanceNov 9
80% chanceNov 12
90% chanceNov 17
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 31
20% chanceNov 3
30% chanceNov 6
40% chanceNov 9
50% chanceNov 11
60% chanceNov 14
70% chanceNov 17
80% chanceNov 21
90% chanceNov 25

Agricultural climatic data from weather station: WILLMAR WWTP (USC00219004)

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