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🍂 First Frost Dates for Snowmass, Colorado 81654

The first 36°F frost date is 30% likely to be on Sep 4. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 15. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Snowmass, CO 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 27
20% chanceSep 1
30% chanceSep 4
40% chanceSep 7
50% chanceSep 9
60% chanceSep 11
70% chanceSep 14
80% chanceSep 17
90% chanceSep 21
Probability of light freeze (32°F) on or before...
10% chanceSep 7
20% chanceSep 12
30% chanceSep 15
40% chanceSep 17
50% chanceSep 20
60% chanceSep 22
70% chanceSep 24
80% chanceSep 27
90% chanceOct 1
Probability of moderate freeze (28°F) on or before...
10% chanceSep 16
20% chanceSep 21
30% chanceSep 24
40% chanceSep 27
50% chanceSep 29
60% chanceOct 1
70% chanceOct 4
80% chanceOct 6
90% chanceOct 10
Probability of moderate hard freeze (24°F) on or before...
10% chanceSep 26
20% chanceSep 30
30% chanceOct 3
40% chanceOct 6
50% chanceOct 9
60% chanceOct 12
70% chanceOct 14
80% chanceOct 17
90% chanceOct 20
Probability of hard freeze (20°F) on or before...
10% chanceOct 4
20% chanceOct 9
30% chanceOct 12
40% chanceOct 15
50% chanceOct 18
60% chanceOct 21
70% chanceOct 24
80% chanceOct 28
90% chanceNov 1
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 16
20% chanceOct 20
30% chanceOct 23
40% chanceOct 26
50% chanceOct 29
60% chanceNov 1
70% chanceNov 3
80% chanceNov 6
90% chanceNov 11

Agricultural climatic data from weather station: ASPEN PITKIN CO AP (USW00093073)

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