Frost Line Depth in San Angelo, TX: Texas Codes Range 0

No official local value

No official frost line depth is published for San Angelo.

No verified code nearby; verified Texas codes range 0–12 in.

Source and how we checked

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

Climate: 49 nights a year at or below 32 °F (NOAA 1991–2020, San Angelo, 5.4 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

0–12 inrange of verified Texas codes
49nights a year at or below 32 °F
100%of nearby soil rated “none” for frost action (USDA)

Does San Angelo have an official frost line depth?

No adopted frost line depth found for San Angelo in its official documents (checked Oct 2026). No verified code lies near San Angelo; the Texas codes we verified range from 0 to 12 in. Ask the building department for San Angelo’s own number before you dig.

What frost line depth does San Angelo 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 San Angelo building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 12 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 San Angelo?

Drawn with the deepest Texas official value (12 in). Confirm San Angelo’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in San Angelo: 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 San Angelo 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 San Angelo?

San Angelo never averages a low below freezing. 49 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 33.7 °F.

NOAA 1991–2020 climate normals, San Angelo station, 5.4 mi away, elevation 1,890 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	33.7	37.6	45.6	52.5	62.3	70	72.3	71.6	64.6	53.8	42.6	34.9
High	61.1	65.4	73.1	81.7	88.7	94.4	97.4	96.7	89.4	80.5	69.2	62

San Angelo has more freezing nights than 145 of the 168 other Texas places we track. The Texas median is 32. Coldest: Amarillo; mildest: Brownsville.

How likely is the soil in San Angelo to heave?

None 100%

USDA rates the sampled soil around San Angelo as 100% none for frost action (main soils: Rioconcho, Tobosa, Cho).

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

San Angelo at a glance

Frost line depth: No official local value
County: Tom Green County
Population (2023 est.): 99,262
Mean annual temperature: 66.7 °F
ZIP codes (6): 76901 · 76903 · 76904 · 76905 · 76908 · 76909