West Sacramento, CA planting zone & frost dates

West Sacramento is in USDA hardiness zone 9b. The last spring frost usually comes around February 2 and the first fall frost around December 2, for a growing season of about 301 days.

USDA hardiness zone9bavg. extreme winter low 25°F to 30°F
Average last spring frostFebruary 290% chance of no frost after March 5
Average first fall frostDecember 210% chance of frost by November 16
Growing season301 daysfrost-free days in an average year

Planting calendar for West Sacramento

Dates are counted from the average last spring frost (February 2) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.

CropWhen
TomatoesStart seeds indoors: Dec 8 – Dec 22
Transplant outdoors: Feb 9 – Feb 16
PeppersStart seeds indoors: Nov 24 – Dec 8
Transplant outdoors: Feb 16 – Feb 23
EggplantStart seeds indoors: Nov 24 – Dec 8
Transplant outdoors: Feb 16 – Feb 23
BroccoliStart seeds indoors: Nov 24 – Dec 8
Transplant outdoors: Jan 5 – Jan 19
CabbageStart seeds indoors: Nov 24 – Dec 8
Transplant outdoors: Jan 5 – Jan 19
Onions (sets)Plant outdoors: Jan 5 – Jan 19
PeasSow outdoors: Dec 22 – Jan 5
SpinachSow outdoors: Dec 22 – Jan 5
LettuceSow outdoors: Jan 5 – Jan 19
CarrotsSow outdoors: Jan 5 – Jan 19
PotatoesPlant outdoors: Jan 5 – Jan 19
BeansSow outdoors: Feb 9 – Feb 16
Sweet cornSow outdoors: Feb 9 – Feb 16
CucumbersSow outdoors: Feb 9 – Feb 16
Squash & zucchiniSow outdoors: Feb 9 – Feb 16
BasilStart seeds indoors: Dec 22 – Jan 5
Transplant outdoors: Feb 9 – Feb 16

Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Oct 7 (8 weeks before the average first fall frost on Dec 2).

Useful for zone 9b gardens

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Frost risk in detail

90% chance50% chance10% chance
Last 32°F frost in spring is afterJan 2Feb 2Mar 5
First 32°F frost in fall is beforeJan 2Dec 2Nov 16

How to read it: in spring there is a 10% chance of a frost after March 5, so that is a safe date for tender plants. In fall there is a 10% chance of frost before November 16. A hard freeze (28°F) usually ends around January 4.

Hardiness zone by ZIP code in West Sacramento

Nearby cities

All cities in California → · Other zone 9b cities →

Questions

What growing zone is West Sacramento, CA?

West Sacramento is in USDA Plant Hardiness Zone 9b (average extreme winter low 25°F to 30°F), according to the USDA 2023 map.

When is the last frost in West Sacramento?

The average last spring frost (32°F) in West Sacramento is February 2. There is still a 10% chance of frost until March 5.

When can I plant tomatoes in West Sacramento?

Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Feb 9 – Feb 16. Start seeds indoors 6–8 weeks before the last frost.

Frost dates: NOAA U.S. Climate Normals 1991–2020, station Sacramento Executive Ap, CA (USW00023232), 8.7 km (5.4 mi) from the city center, elevation 5 m, based on 30 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.