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🍂 First Frost Dates for Sierra City, California 96125

The first 36°F frost date is 30% likely to be on Oct 9. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 25. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Sierra 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% chanceSep 29
20% chanceOct 4
30% chanceOct 9
40% chanceOct 13
50% chanceOct 17
60% chanceOct 21
70% chanceOct 26
80% chanceNov 1
90% chanceNov 6
Probability of light freeze (32°F) on or before...
10% chanceOct 13
20% chanceOct 19
30% chanceOct 25
40% chanceOct 30
50% chanceNov 2
60% chanceNov 6
70% chanceNov 9
80% chanceNov 13
90% chanceNov 18
Probability of moderate freeze (28°F) on or before...
10% chanceNov 1
20% chanceNov 7
30% chanceNov 11
40% chanceNov 15
50% chanceNov 18
60% chanceNov 21
70% chanceNov 25
80% chanceNov 30
90% chanceDec 6
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 15
20% chanceNov 21
30% chanceNov 25
40% chanceNov 30
50% chanceDec 4
60% chanceDec 8
70% chanceDec 15
80% chanceDec 22
90% chanceJan 1
Probability of hard freeze (20°F) on or before...
10% chanceNov 27
20% chanceDec 4
30% chanceDec 10
40% chanceDec 17
50% chanceDec 23
60% chanceDec 30
70% chanceJan 4
80% chanceJan 14
90% chanceJan 27
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 7
20% chanceDec 15
30% chanceDec 23
40% chanceDec 28
50% chanceJan 1
60% chanceJan 7
70% chanceJan 16
80% chanceJan 26
90% chanceFeb 8

Agricultural climatic data from weather station: SIERRA CITY (USC00048207)

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