Frost Line Depth in Madera, CA: Turlock Requires 12 in

No official local value

No official frost line depth is published for Madera.

Nearby official codes require 12 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: 25 nights a year at or below 32 °F (NOAA 1991–2020, Madera Municipal Airport, 2 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

12 in1 verified code within 57 mi
25nights a year at or below 32 °F
100%of nearby soil rated “none” for frost action (USDA)

Does Madera have an official frost line depth?

No adopted frost line depth found for Madera in its official documents (checked Oct 2026). The nearest official values, from codes we verified, are 12 in. Use the deepest of them until the building department confirms Madera’s own number.

What frost line depth does Madera use for footings under Table R301.2(1)? Is it 12 in, like Turlock?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Madera building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 12 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 Madera?

Drawn with the deepest nearby official value (12 in). Confirm Madera’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Madera: dig at least 12 in (30 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 12 in until Madera confirms its own
Project	Depth	Rule
House or garage footing	12 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	12 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	18 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	12 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 Madera?

Madera never averages a low below freezing. 25 nights a year reach 32 °F or colder; Dec is coldest, with an average low of 37.6 °F.

NOAA 1991–2020 climate normals, Madera Municipal Airport station, 2 mi away, elevation 253 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	38.6	40.8	43.7	46.4	52.3	57.9	62.6	61.3	57.8	49.8	41.8	37.6
High	56.9	62.6	68.5	75	83.9	92.2	97.7	96.7	91.7	80.1	66.4	56.3

Madera has more freezing nights than 187 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 Madera use?

One official code near Madera is verified.

Official frost line depths near Madera
Place	Verified frost line	Distance
Turlock	12 in	57 mi away

How likely is the soil in Madera to heave?

None 100%

USDA rates the sampled soil around Madera as 100% none for frost action (main soils: Cometa, Tujunga, Hanford).

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

Madera at a glance

Frost line depth: No official local value
County: Madera County
Population (2023 est.): 68,079
Mean annual temperature: 63.3 °F
ZIP codes (3): 93636 · 93637 · 93638