๐Ÿ‚ First Frost Dates for Marion, South Dakota 57043

The first 36ยฐF frost date is 30% likely to be on Sep 21. (See detailed probabilities below.)

The first 32ยฐF light freeze date is 30% likely to be on Sep 28. (See detailed probabilities below.)

(See also ๐ŸŒท Last Spring Frost Dates.)

First frost date probabilities for Marion, SD are based on historical climate data.

Always check your local forecast for the most up-to-date frost warnings.

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 sweaterโ€”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 (36ยฐF) on or before...
10% chanceSep 14
20% chanceSep 18
30% chanceSep 21
40% chanceSep 23
50% chanceSep 26
60% chanceSep 28
70% chanceSep 30
80% chanceOct 3
90% chanceOct 7
Probability of light freeze (32ยฐF) on or before...
10% chanceSep 21
20% chanceSep 26
30% chanceSep 28
40% chanceOct 1
50% chanceOct 3
60% chanceOct 6
70% chanceOct 8
80% chanceOct 12
90% chanceOct 16
Probability of moderate freeze (28ยฐF) on or before...
10% chanceSep 29
20% chanceOct 3
30% chanceOct 7
40% chanceOct 10
50% chanceOct 13
60% chanceOct 16
70% chanceOct 19
80% chanceOct 22
90% chanceOct 26
Probability of moderate hard freeze (24ยฐF) on or before...
10% chanceOct 8
20% chanceOct 14
30% chanceOct 17
40% chanceOct 20
50% chanceOct 23
60% chanceOct 26
70% chanceOct 29
80% chanceNov 1
90% chanceNov 6
Probability of hard freeze (20ยฐF) on or before...
10% chanceOct 18
20% chanceOct 23
30% chanceOct 27
40% chanceOct 30
50% chanceNov 1
60% chanceNov 4
70% chanceNov 8
80% chanceNov 12
90% chanceNov 17
Probability of severe hard freeze (16ยฐF) on or before...
10% chanceOct 26
20% chanceNov 1
30% chanceNov 4
40% chanceNov 8
50% chanceNov 11
60% chanceNov 14
70% chanceNov 18
80% chanceNov 22
90% chanceNov 27

Agricultural climatic data from weather station: MARION (USC00395228)