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🍂 First Frost Dates for Big Bear City, California 92314

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

A 32°F light freeze is always a risk here. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Big Bear City, 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% chancealways
20% chancealways
30% chancealways
40% chancealways
50% chancealways
60% chancealways
70% chancealways
80% chancealways
90% chancealways
Probability of moderate freeze (28°F) on or before...
10% chanceSep 25
20% chanceSep 30
30% chanceOct 3
40% chanceOct 6
50% chanceOct 10
60% chanceOct 13
70% chanceOct 17
80% chanceOct 21
90% chanceOct 27
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 7
20% chanceOct 13
30% chanceOct 18
40% chanceOct 22
50% chanceOct 27
60% chanceNov 1
70% chanceNov 3
80% chanceNov 6
90% chanceNov 13
Probability of hard freeze (20°F) on or before...
10% chanceOct 22
20% chanceNov 1
30% chanceNov 5
40% chanceNov 9
50% chanceNov 13
60% chanceNov 16
70% chanceNov 20
80% chanceNov 24
90% chanceNov 29
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 9
20% chanceNov 16
30% chanceNov 20
40% chanceNov 23
50% chanceNov 27
60% chanceDec 1
70% chanceDec 4
80% chanceDec 8
90% chanceDec 15

Agricultural climatic data from weather station: BIG BEAR LAKE (USC00040741)

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