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🍂 First Frost Dates for Witter Springs, California 95493

The first 36°F frost date is 30% likely to be on Oct 11. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 31. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Witter Springs, 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% chanceOct 2
20% chanceOct 7
30% chanceOct 11
40% chanceOct 15
50% chanceOct 19
60% chanceOct 22
70% chanceOct 26
80% chanceOct 31
90% chanceNov 4
Probability of light freeze (32°F) on or before...
10% chanceOct 19
20% chanceOct 26
30% chanceOct 31
40% chanceNov 2
50% chanceNov 5
60% chanceNov 9
70% chanceNov 13
80% chanceNov 18
90% chanceNov 26
Probability of moderate freeze (28°F) on or before...
10% chanceNov 5
20% chanceNov 10
30% chanceNov 15
40% chanceNov 20
50% chanceNov 24
60% chanceNov 29
70% chanceDec 2
80% chanceDec 6
90% chanceDec 15
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 19
20% chanceNov 26
30% chanceDec 1
40% chanceDec 5
50% chanceDec 10
60% chanceDec 16
70% chanceDec 24
80% chanceJan 2
90% chanceJan 16
Probability of hard freeze (20°F) on or before...
10% chanceDec 1
20% chanceDec 8
30% chanceDec 14
40% chanceDec 23
50% chanceDec 31
60% chanceJan 3
70% chanceJan 8
80% chanceJan 21
90% chanceFeb 1
Probability of severe hard freeze (16°F) on or before...
10% chancerarely
20% chancerarely
30% chancerarely
40% chancerarely
50% chancerarely
60% chancerarely
70% chancerarely
80% chancerarely
90% chancerarely

Agricultural climatic data from weather station: POTTER VALLEY P H (USC00047109)

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