Frost Line Depth in Corpus Christi, Texas
- Corpus Christi’s adopted code
- Checked Oct 2026
- Sources
Verified
0in
No frost depth required
Set in the building code Corpus Christi has adopted.
Footings still go at least 12 in (30 cm) below undisturbed ground (IRC R403.1.4).
Source and how we checked
Document: corpuschristitx.gov
Climate: 1 night a year at or below 32 °F (NOAA 1991–2020, Port Aransas 11 Ssw, 3.9 mi).
Checked Oct 2026. Report a correction
How deep is the frost line in Corpus Christi?
Corpus Christi's building authority sets the frost line depth at 0 in (0 cm). Footings, piers and other permanent supports still go at least 12 in below undisturbed ground (IRC R403.1.4).
Who sets the frost line depth in Corpus Christi?
Texas leaves the frost line depth to each city or county, and Corpus Christi fills it in when it adopts the residential code. The value above comes from Corpus Christi’s own document on corpuschristitx.gov. See how Texas sets frost line depth.
How deep do footings, decks and water lines need to be in Corpus Christi?
House or garage footing in Corpus Christi: dig at least 12 in (30 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).
| 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 | 12 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 Corpus Christi?
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Corpus Christi never averages a low below freezing. 1 night a year reach 32 °F or colder; Jan is coldest, with an average low of 48.6 °F.
NOAA 1991–2020 climate normals, Port Aransas 11 Ssw station, 3.9 mi away, elevation 6 ft.
Monthly temperatures as a table
| °F | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low | 48.6 | 52.4 | 57.4 | 65.3 | 72.1 | 77.3 | 78.5 | 78.7 | 75.1 | 69.9 | 59.7 | 51.6 |
| High | 63.3 | 65.8 | 70.7 | 77.4 | 82.8 | 88.7 | 88.7 | 90.5 | 88.5 | 82.8 | 73.2 | 66.5 |
Corpus Christi has fewer freezing nights than 159 of the 168 other Texas places we track. The Texas median is 32. Coldest: Amarillo; mildest: Brownsville.
How likely is the soil in Corpus Christi to heave?
USDA rates the sampled soil around Corpus Christi as 100% none for frost action (main soils: Mustang, Tidal flats, Malaquite).
USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.
How do you confirm the frost line before you dig in Corpus Christi?
Corpus Christi at a glance
- Frost line depth
- 0 in
- County
- Nueces County
- Population (2023 est.)
- 316,595
- Mean annual temperature
- 71.9 °F
- ZIP codes (23)
- 78362 · 78370 · 78373 · 78374 · 78380 · 78401 · 78402 · 78404 · 78405 · 78406 · 78407 · 78408 · 78409 · 78410 · 78411 · 78412 · 78413 · 78414 · 78415 · 78416 · 78417 · 78418 · 78419