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🍂 First Frost Dates for Ogden, Utah 84401

The first 36°F frost date is 30% likely to be on Sep 25. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 5. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Ogden, 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 17
20% chanceSep 21
30% chanceSep 25
40% chanceSep 27
50% chanceSep 30
60% chanceOct 2
70% chanceOct 5
80% chanceOct 9
90% chanceOct 14
Probability of light freeze (32°F) on or before...
10% chanceSep 27
20% chanceOct 1
30% chanceOct 5
40% chanceOct 8
50% chanceOct 12
60% chanceOct 16
70% chanceOct 19
80% chanceOct 22
90% chanceOct 27
Probability of moderate freeze (28°F) on or before...
10% chanceOct 9
20% chanceOct 17
30% chanceOct 21
40% chanceOct 24
50% chanceOct 27
60% chanceOct 30
70% chanceNov 2
80% chanceNov 5
90% chanceNov 10
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 25
20% chanceOct 30
30% chanceNov 2
40% chanceNov 5
50% chanceNov 8
60% chanceNov 11
70% chanceNov 14
80% chanceNov 18
90% chanceNov 23
Probability of hard freeze (20°F) on or before...
10% chanceNov 3
20% chanceNov 9
30% chanceNov 13
40% chanceNov 16
50% chanceNov 20
60% chanceNov 23
70% chanceNov 26
80% chanceNov 29
90% chanceDec 3
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 13
20% chanceNov 18
30% chanceNov 23
40% chanceNov 26
50% chanceNov 29
60% chanceDec 2
70% chanceDec 5
80% chanceDec 10
90% chanceDec 16

Agricultural climatic data from weather station: OGDEN SUGAR FACTORY (USC00426414)

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