Frost Dates for Belvedere Tiburon, CA 94920

Last spring frost Frost-free zone · First fall frost Frost-free zone · 365 frost-free days · USDA Zone 10a

Frost probability for 94920

Frost10%50%90%
Spring (last frost)March 15——
Fall (first frost)November 19——

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (8.5 km away); the 50% date is the median year.

Month by month in Belvedere Tiburon

MonthWhat to do
JanuaryPlant cool-season crops: lettuce, spinach, broccoli, peas, and carrots.
FebruaryDirect sow brassicas and root vegetables. Start warm-season seedlings indoors.
MarchTransplant warm-season crops outdoors. Sow beans, cucumbers, and squash.
AprilMain warm-season planting window. Direct sow melons and sweet corn.
MaySuccession plant lettuce. Keep beds irrigated as temperatures climb.
JuneMonitor for heat stress. Harvest zucchini and cucumbers frequently.
JulyHarvest regularly to encourage continued production. Watch for pests.
AugustStart fall cool-season crops: broccoli, kale, beets, and carrots.
SeptemberPlant fall lettuce, spinach, arugula, and radishes.
OctoberHarvest mature crops. Direct sow cold-tolerant greens.
NovemberPlant garlic and onion sets. Harvest cool-season crops through the month.
DecemberPlant cool-season crops for winter harvest. Plan next year's garden.

What grows in a 365-day season

Frequently Asked Questions

What is the last frost date for Belvedere Tiburon, CA (ZIP 94920)?

Belvedere Tiburon, CA is frost-free in most years, so there's no last spring frost date to plan around.

What is the first fall frost date in Belvedere Tiburon, CA?

Belvedere Tiburon, CA is frost-free in most years, so there's no first fall frost date to plan around.

How long is the growing season in Belvedere Tiburon, CA?

The frost-free growing season in Belvedere Tiburon is year-round. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is Belvedere Tiburon, CA?

Based on frost date patterns, Belvedere Tiburon falls approximately in 10a. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in Belvedere Tiburon, CA?

Belvedere Tiburon is a frost-free zone, so you can start tomatoes and transplant at any time of year. Focus on heat management rather than frost timing.

Nearby and related