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🍂 First Frost Dates for Bieber, California 96009

A 36°F frost is always a risk here. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 16. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Bieber, CA 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% chancealways
20% chancealways
30% chancealways
40% chancealways
50% chancealways
60% chancealways
70% chancealways
80% chancealways
90% chancealways
Probability of light freeze (32°F) on or before...
10% chanceSep 7
20% chanceSep 13
30% chanceSep 16
40% chanceSep 19
50% chanceSep 23
60% chanceSep 26
70% chanceSep 29
80% chanceOct 2
90% chanceOct 7
Probability of moderate freeze (28°F) on or before...
10% chanceSep 20
20% chanceSep 26
30% chanceSep 30
40% chanceOct 3
50% chanceOct 6
60% chanceOct 9
70% chanceOct 14
80% chanceOct 18
90% chanceOct 24
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 5
20% chanceOct 11
30% chanceOct 16
40% chanceOct 20
50% chanceOct 24
60% chanceOct 29
70% chanceNov 1
80% chanceNov 7
90% chanceNov 14
Probability of hard freeze (20°F) on or before...
10% chanceOct 19
20% chanceOct 26
30% chanceNov 1
40% chanceNov 5
50% chanceNov 10
60% chanceNov 15
70% chanceNov 20
80% chanceNov 25
90% chanceDec 1
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 31
20% chanceNov 9
30% chanceNov 15
40% chanceNov 20
50% chanceNov 25
60% chanceNov 29
70% chanceDec 3
80% chanceDec 8
90% chanceDec 16

Agricultural climatic data from weather station: ADIN RS (USC00040029)

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