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🍂 First Frost Dates for Fort Duchesne, Utah 84026

The first 36°F frost date is 30% likely to be on Sep 10. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 19. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Fort Duchesne, UT 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 1
20% chanceSep 6
30% chanceSep 10
40% chanceSep 12
50% chanceSep 15
60% chanceSep 17
70% chanceSep 20
80% chanceSep 23
90% chanceSep 28
Probability of light freeze (32°F) on or before...
10% chanceSep 11
20% chanceSep 16
30% chanceSep 19
40% chanceSep 22
50% chanceSep 24
60% chanceSep 27
70% chanceSep 29
80% chanceOct 2
90% chanceOct 6
Probability of moderate freeze (28°F) on or before...
10% chanceSep 20
20% chanceSep 25
30% chanceSep 28
40% chanceOct 1
50% chanceOct 3
60% chanceOct 6
70% chanceOct 8
80% chanceOct 12
90% chanceOct 16
Probability of moderate hard freeze (24°F) on or before...
10% chanceSep 30
20% chanceOct 5
30% chanceOct 9
40% chanceOct 13
50% chanceOct 16
60% chanceOct 19
70% chanceOct 22
80% chanceOct 24
90% chanceOct 28
Probability of hard freeze (20°F) on or before...
10% chanceOct 13
20% chanceOct 19
30% chanceOct 22
40% chanceOct 25
50% chanceOct 27
60% chanceOct 30
70% chanceNov 1
80% chanceNov 4
90% chanceNov 8
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 24
20% chanceOct 29
30% chanceNov 1
40% chanceNov 4
50% chanceNov 6
60% chanceNov 9
70% chanceNov 11
80% chanceNov 14
90% chanceNov 18

Agricultural climatic data from weather station: ROOSEVELT RADIO (USC00427395)

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