When is the last frost in Yuba City, CA?

The average last spring frost (50% probability of 32°F) in Yuba City is around February 11, based on NOAA/NCEI 1991–2020 normals at the Marysville Yuba Co Ap, CA station (6.4 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Yuba City?

The average first fall frost in Yuba City, CA is around November 30, giving roughly a 289-day frost-free growing season.

What planting zone is Yuba City, CA?

Yuba City is in USDA plant hardiness zone 9b (average annual extreme minimum temperature 25 to 30°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Yuba City?

In Yuba City, CA the warmest month is July (avg high 96.2°F) and the coldest is December (avg low 37.7°F). It averages about 20.1″ of precipitation a year.

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Yuba City, CA Planting Calendar & Frost Dates

USDA hardiness zone 9b · ZIP 95991 · elevation 19′ · NOAA & USDA data

Yuba City is in USDA hardiness zone 9b (winters can dip to 25 to 30°F), with a growing season of about 289 days between the average last spring frost (February 11) and first fall frost (November 30). The warmest month is July (avg high 96.2°F); the coldest is December (avg low 37.7°F). It averages 20.1″ of precipitation a year. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp 25 to 30°F

Last spring frost

February 11

avg (50% prob, 32°F)

First fall frost

November 30

avg (50% prob, 32°F)

Growing season

289 days

frost-free window

Warmest month

July

avg high 96.2°F

Month-by-month typical weather in Yuba City

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Marysville Yuba Co Ap, CA (6.4 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	55.5	38.2	46.8	3.8	–
February	60.4	41.1	50.8	3.7	–
March	66.2	43.4	54.8	2.9	–
April	72.6	46.4	59.5	1.4	–
May	81.9	52.4	67.1	0.9	–
June	90.1	57.9	74	0.3	–
July	96.2	60.7	78.5	0	–
August	94.5	59.5	77	0.1	–
September	89.6	55.7	72.7	0.1	–
October	79	49.4	64.2	1	–
November	64.2	41.3	52.7	2.2	–
December	55.4	37.7	46.6	3.7	–

What to plant when in Yuba City

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: December 31 · Transplant out: February 18
Peppers	warm	Start seeds indoors: December 17 · Transplant out: February 25
Cucumbers	warm	Direct sow: February 18
Zucchini / squash	warm	Direct sow: February 18
Bush beans	warm	Direct sow: February 18
Sweet corn	warm	Direct sow: February 18
Basil	warm	Transplant out: February 18
Peas	cool	Sow (spring): January 7 · Sow (fall): October 5
Spinach	cool	Sow (spring): December 31 · Sow (fall): October 5
Lettuce	cool	Sow (spring): January 14 · Sow (fall): October 5
Kale	cool	Transplant (spring): January 21 · Sow (fall): September 21
Broccoli	cool	Transplant (spring): January 28
Carrots	cool	Sow (spring): January 21 · Sow (fall): September 21
Onions	cool	Transplant (spring): January 14
Potatoes	cool	Plant seed potatoes: January 28
Radishes	cool	Sow (spring): January 14 · Sow (fall): October 19

Dates are computed from Yuba City's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in California

Lincoln, CA Roseville, CA Rocklin, CA Woodland, CA West Sacramento, CA Citrus Heights, CA Sacramento, CA Davis, CA

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Marysville Yuba Co Ap, CA, 6.4 mi (confidence: high). Monthly weather normals: Marysville Yuba Co Ap, CA, 6.4 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.