Frost Line Depth in Yuba City, CA: Placer County Requires 18 in

No official local value

No official frost line depth is published for Yuba City.

Nearby official codes require 18 in (1 verified code).

Source and how we checked

We searched this place’s own code and website and found no published frost line depth.

Climate: 8 nights a year at or below 32 °F (NOAA 1991–2020, Marysville, 3.2 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

18 in1 verified code within 49 mi
8nights a year at or below 32 °F
89%of nearby soil rated “none” for frost action (USDA)

Does Yuba City have an official frost line depth?

No adopted frost line depth found for Yuba City in its official documents (checked Oct 2026). The nearest official values, from codes we verified, are 18 in. Use the deepest of them until the building department confirms Yuba City’s own number.

What frost line depth does Yuba City use for footings under Table R301.2(1)? Is it 18 in, like Placer County?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Yuba City building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 18 in (the deepest nearby value) unless the building department tells you otherwise.
Book the footing inspection before you pour concrete.

How deep do footings, decks and water lines need to be in Yuba City?

Drawn with the deepest nearby official value (18 in). Confirm Yuba City’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Yuba City: dig at least 18 in (46 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 18 in until Yuba City confirms its own
Project	Depth	Rule
House or garage footing	18 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	18 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	24 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	18 in	No code rule; common practice is below the frost line

Work out posts, concrete and footing sizes with the fence post depth calculator or the deck footing calculator.

How cold does it get in Yuba City?

Yuba City never averages a low below freezing. 8 nights a year reach 32 °F or colder; Dec is coldest, with an average low of 39.8 °F.

NOAA 1991–2020 climate normals, Marysville station, 3.2 mi away, elevation 57 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	40.1	43	46	49.1	55.6	60.8	63.9	62.9	59.5	52.6	44.3	39.8
High	57.2	62.7	67.8	74.7	82.7	92	98	96.8	90.9	80.2	66.5	57.7

Yuba City has more freezing nights than 128 of the 208 other California places we track. The California median is 3. Coldest: El Dorado County; mildest: San Diego.

What frost line depth do towns near Yuba City use?

One official code near Yuba City is verified.

Official frost line depths near Yuba City
Place	Verified frost line	Distance
Placer County	18 in	49 mi away

How likely is the soil in Yuba City to heave?

None 89%

USDA rates the sampled soil around Yuba City as 89% none, 11% low for frost action (main soils: Conejo, Tisdale, Urban land).

USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.

Yuba City at a glance

Frost line depth: No official local value
County: Sutter County
Population (2023 est.): 68,666
Mean annual temperature: 64.4 °F
ZIP codes (2): 95991 · 95993