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🍂 2026 First Frost Dates for Cedar City, Utah 84721

The first 36°F frost date is 30% likely to be on Sep 20. (See detailed probabilities below.)

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

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Cedar City, 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 12
20% chanceSep 16
30% chanceSep 20
40% chanceSep 23
50% chanceSep 25
60% chanceSep 28
70% chanceOct 1
80% chanceOct 4
90% chanceOct 8
Probability of light freeze (32°F) on or before...
10% chanceSep 19
20% chanceSep 24
30% chanceSep 28
40% chanceOct 1
50% chanceOct 4
60% chanceOct 6
70% chanceOct 10
80% chanceOct 14
90% chanceOct 20
Probability of moderate freeze (28°F) on or before...
10% chanceSep 28
20% chanceOct 3
30% chanceOct 6
40% chanceOct 10
50% chanceOct 14
60% chanceOct 18
70% chanceOct 22
80% chanceOct 27
90% chanceNov 3
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 13
30% chanceOct 19
40% chanceOct 23
50% chanceOct 27
60% chanceNov 1
70% chanceNov 3
80% chanceNov 8
90% chanceNov 13
Probability of hard freeze (20°F) on or before...
10% chanceOct 19
20% chanceOct 25
30% chanceOct 30
40% chanceNov 3
50% chanceNov 6
60% chanceNov 9
70% chanceNov 13
80% chanceNov 17
90% chanceNov 22
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 29
20% chanceNov 4
30% chanceNov 9
40% chanceNov 13
50% chanceNov 16
60% chanceNov 19
70% chanceNov 23
80% chanceNov 26
90% chanceDec 1

Agricultural climatic data from weather station: CEDAR CITY 5E (USC00421260)

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