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🌷 Your Ultimate Garden Calendar!

🌷 2026 Last Frost Dates for Vallejo, California 94591

The last 36°F Spring frost date is 30% likely to be on Mar 20. (See detailed probabilities below.)

The last 32°F light freeze date is 30% likely to be on Feb 2. (See detailed probabilities below.)

(See also 🍂 First Fall Frost Dates.)

Last frost date probabilities for Vallejo, 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 Last Frost Date?

The last spring frost signals when your area is safe from freezing temperatures. Tender plants can now grow outdoors without cold damage! This marks the beginning of the growing season. Last spring frost serves as your essential starting point for planting warm-season crops. It's also time to remove winter protection from your perennials. Enjoy the longer days and warmer weather!

How to use the Last Frost Date?

Start seeds indoors several weeks before your last frost date. This gives plants time to reach transplanting size when weather permits. Plan your outdoor planting schedule around your area's average last frost date. Plant some crops before and some after this date to protect against weather changes. Look for spots in your yard where frost stays longer or disappears earlier. Create your own frost map to use all available growing space and extend your season. Keep watching your local weather forecast to catch any surprise late frosts.

Last Frost Date Probabilities

Probability of frost (36°F) on or after…
10% chance Apr 8
20% chance Mar 29
30% chance Mar 20
40% chance Mar 13
50% chance Mar 4
60% chance Feb 27
70% chance Feb 15
80% chance Feb 1
90% chance Jan 19
Probability of light freeze (32°F) on or after…
10% chance Mar 4
20% chance Feb 18
30% chance Feb 2
40% chance Jan 25
50% chance Jan 17
60% chance Jan 11
70% chance Jan 5
80% chance Dec 31
90% chance Dec 23
Probability of moderate freeze (28°F) on or after…
10% chance Jan 19
20% chance Jan 14
30% chance Jan 11
40% chance Jan 8
50% chance Jan 5
60% chance Jan 2
70% chance Dec 31
80% chance Dec 26
90% chance Dec 19
Probability of moderate hard freeze (24°F) on or after…
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 after…
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 after…
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: VALLEJO (USC00049219:frost)

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