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🍂 First Frost Dates for Hillman, Michigan 49746

The first 36°F frost date is 30% likely to be on Sep 11. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 25. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Hillman, MI 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 1
20% chanceSep 6
30% chanceSep 11
40% chanceSep 16
50% chanceSep 19
60% chanceSep 22
70% chanceSep 25
80% chanceSep 29
90% chanceOct 3
Probability of light freeze (32°F) on or before...
10% chanceSep 14
20% chanceSep 21
30% chanceSep 25
40% chanceSep 28
50% chanceOct 1
60% chanceOct 4
70% chanceOct 6
80% chanceOct 10
90% chanceOct 16
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 18
70% chanceOct 22
80% chanceOct 27
90% chanceNov 1
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 11
20% chanceOct 18
30% chanceOct 23
40% chanceOct 27
50% chanceOct 31
60% chanceNov 2
70% chanceNov 5
80% chanceNov 9
90% chanceNov 15
Probability of hard freeze (20°F) on or before...
10% chanceOct 28
20% chanceNov 2
30% chanceNov 6
40% chanceNov 9
50% chanceNov 12
60% chanceNov 15
70% chanceNov 18
80% chanceNov 22
90% chanceNov 28
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 8
20% chanceNov 12
30% chanceNov 16
40% chanceNov 19
50% chanceNov 22
60% chanceNov 26
70% chanceNov 29
80% chanceDec 3
90% chanceDec 9

Agricultural climatic data from weather station: ATLANTA 5 WNW (USC00200343)

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