Frost Line Depth in Redding, CA: California Codes Range 0

No official local value

No official frost line depth is published for Redding.

No verified code nearby; verified California codes range 0–30 in.

Source and how we checked

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

Climate: 27 nights a year at or below 32 °F (NOAA 1991–2020, Redding Municipal Airport, 5.1 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

0–30 inrange of verified California codes
27nights a year at or below 32 °F
100%of nearby soil rated “none” for frost action (USDA)

Does Redding have an official frost line depth?

No adopted frost line depth found for Redding in its official documents (checked Oct 2026). No verified code lies near Redding; the California codes we verified range from 0 to 30 in. Ask the building department for Redding’s own number before you dig.

What frost line depth does Redding use for footings under Table R301.2(1)?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Redding building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 30 in (the deepest verified state 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 Redding?

Drawn with the deepest California official value (30 in). Confirm Redding’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Redding: dig at least 30 in (76 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 30 in until Redding confirms its own
Project	Depth	Rule
House or garage footing	30 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	30 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	36 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	30 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 Redding?

Redding never averages a low below freezing. 27 nights a year reach 32 °F or colder; Dec is coldest, with an average low of 37.2 °F.

NOAA 1991–2020 climate normals, Redding Municipal Airport station, 5.1 mi away, elevation 497 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	37.7	40.1	43.2	47	54.3	62.4	67	63.9	58.2	50.2	41.5	37.2
High	57.2	61	65.7	71.8	82	91.9	99.9	98.1	92.3	79.4	64.4	56

Redding has more freezing nights than 190 of the 208 other California places we track. The California median is 3. Coldest: El Dorado County; mildest: San Diego.

How likely is the soil in Redding to heave?

None 100%

USDA rates the sampled soil around Redding as 100% none for frost action (main soils: Newtown, Red Bluff, Redding).

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

Redding at a glance

Frost line depth: No official local value
County: Shasta County
Population (2023 est.): 92,727
Mean annual temperature: 63.4 °F
ZIP codes (5): 96001 · 96002 · 96003 · 96007 · 96019