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🍂 First Frost Dates for Baraboo, Wisconsin 53913

The first 36°F frost date is 30% likely to be on Sep 16. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 24. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Baraboo, 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% chanceSep 6
20% chanceSep 12
30% chanceSep 16
40% chanceSep 18
50% chanceSep 21
60% chanceSep 23
70% chanceSep 25
80% chanceSep 27
90% chanceOct 1
Probability of light freeze (32°F) on or before...
10% chanceSep 17
20% chanceSep 21
30% chanceSep 24
40% chanceSep 27
50% chanceSep 29
60% chanceOct 1
70% chanceOct 3
80% chanceOct 6
90% chanceOct 10
Probability of moderate freeze (28°F) on or before...
10% chanceSep 26
20% chanceSep 30
30% chanceOct 2
40% chanceOct 5
50% chanceOct 8
60% chanceOct 11
70% chanceOct 14
80% chanceOct 19
90% chanceOct 25
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 4
20% chanceOct 9
30% chanceOct 13
40% chanceOct 17
50% chanceOct 21
60% chanceOct 24
70% chanceOct 28
80% chanceOct 31
90% chanceNov 5
Probability of hard freeze (20°F) on or before...
10% chanceOct 15
20% chanceOct 21
30% chanceOct 27
40% chanceOct 31
50% chanceNov 1
60% chanceNov 4
70% chanceNov 8
80% chanceNov 12
90% chanceNov 18
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 29
20% chanceNov 2
30% chanceNov 5
40% chanceNov 9
50% chanceNov 13
60% chanceNov 16
70% chanceNov 20
80% chanceNov 24
90% chanceNov 28

Agricultural climatic data from weather station: BARABOO (USC00470516)

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