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🍂 First Frost Dates for Ojibwa, Wisconsin 54862

The first 36°F frost date is 30% likely to be on Sep 9. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 20. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Ojibwa, WI 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% chanceAug 30
20% chanceSep 5
30% chanceSep 9
40% chanceSep 12
50% chanceSep 15
60% chanceSep 18
70% chanceSep 21
80% chanceSep 24
90% chanceSep 27
Probability of light freeze (32°F) on or before...
10% chanceSep 10
20% chanceSep 17
30% chanceSep 20
40% chanceSep 23
50% chanceSep 25
60% chanceSep 28
70% chanceOct 1
80% chanceOct 3
90% chanceOct 7
Probability of moderate freeze (28°F) on or before...
10% chanceSep 21
20% chanceSep 27
30% chanceSep 30
40% chanceOct 2
50% chanceOct 5
60% chanceOct 8
70% chanceOct 11
80% chanceOct 15
90% chanceOct 21
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 1
20% chanceOct 5
30% chanceOct 9
40% chanceOct 13
50% chanceOct 17
60% chanceOct 20
70% chanceOct 24
80% chanceOct 28
90% chanceNov 2
Probability of hard freeze (20°F) on or before...
10% chanceOct 12
20% chanceOct 17
30% chanceOct 22
40% chanceOct 26
50% chanceOct 29
60% chanceNov 1
70% chanceNov 4
80% chanceNov 8
90% chanceNov 13
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 23
20% chanceOct 29
30% chanceNov 1
40% chanceNov 5
50% chanceNov 8
60% chanceNov 11
70% chanceNov 15
80% chanceNov 18
90% chanceNov 23

Agricultural climatic data from weather station: WINTER (USC00479304)

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