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🍂 First Frost Dates for Buffalo, South Dakota 57720

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 18. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Buffalo, SD 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 4
20% chanceSep 8
30% chanceSep 11
40% chanceSep 13
50% chanceSep 15
60% chanceSep 18
70% chanceSep 21
80% chanceSep 24
90% chanceSep 28
Probability of light freeze (32°F) on or before...
10% chanceSep 10
20% chanceSep 14
30% chanceSep 18
40% chanceSep 21
50% chanceSep 23
60% chanceSep 26
70% chanceSep 29
80% chanceOct 2
90% chanceOct 6
Probability of moderate freeze (28°F) on or before...
10% chanceSep 16
20% chanceSep 21
30% chanceSep 25
40% chanceSep 29
50% chanceOct 2
60% chanceOct 5
70% chanceOct 8
80% chanceOct 12
90% chanceOct 17
Probability of moderate hard freeze (24°F) on or before...
10% chanceSep 24
20% chanceSep 30
30% chanceOct 5
40% chanceOct 8
50% chanceOct 12
60% chanceOct 16
70% chanceOct 19
80% chanceOct 23
90% chanceOct 27
Probability of hard freeze (20°F) on or before...
10% chanceOct 3
20% chanceOct 10
30% chanceOct 15
40% chanceOct 19
50% chanceOct 23
60% chanceOct 26
70% chanceOct 29
80% chanceNov 1
90% chanceNov 7
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 15
20% chanceOct 21
30% chanceOct 26
40% chanceOct 29
50% chanceNov 1
60% chanceNov 4
70% chanceNov 8
80% chanceNov 13
90% chanceNov 18

Agricultural climatic data from weather station: BUFFALO ASOS (USW00094037)

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