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🍂 2026 First Frost Dates for La Habra, California 90631

The first 36°F frost date is 30% likely to be on Dec 16. (See detailed probabilities below.)

The chance of a 32°F light freeze is very rare here. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for La Habra, 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% chance Dec 7
20% chance Dec 12
30% chance Dec 16
40% chance Dec 19
50% chance Dec 24
60% chance Dec 27
70% chance Jan 1
80% chance Jan 7
90% chance Jan 20
Probability of light freeze (32°F) on or before...
10% chance rarely
20% chance rarely
30% chance rarely
40% chance rarely
50% chance rarely
60% chance rarely
70% chance rarely
80% chance rarely
90% chance rarely
Probability of moderate freeze (28°F) on or before...
10% chance rarely
20% chance rarely
30% chance rarely
40% chance rarely
50% chance rarely
60% chance rarely
70% chance rarely
80% chance rarely
90% chance rarely
Probability of moderate hard freeze (24°F) on or before...
10% chance rarely
20% chance rarely
30% chance rarely
40% chance rarely
50% chance rarely
60% chance rarely
70% chance rarely
80% chance rarely
90% chance rarely
Probability of hard freeze (20°F) on or before...
10% chance rarely
20% chance rarely
30% chance rarely
40% chance rarely
50% chance rarely
60% chance rarely
70% chance rarely
80% chance rarely
90% chance rarely
Probability of severe hard freeze (16°F) on or before...
10% chance rarely
20% chance rarely
30% chance rarely
40% chance rarely
50% chance rarely
60% chance rarely
70% chance rarely
80% chance rarely
90% chance rarely

Agricultural climatic data from weather station: FULLERTON MUNI AP (USW00003166:frost)

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