Frost Line Depth in Santa Maria, California
- California range from verified codes
- Checked Oct 2026
No official local value
No official frost line depth is published for Santa Maria.
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: 9 nights a year at or below 32 °F (NOAA 1991–2020, Santa Maria Public Airport, 2.3 mi).
Checked Oct 2026. Report a correction
Does Santa Maria have an official frost line depth?
No adopted frost line depth found for Santa Maria in its official documents (checked Oct 2026). No verified code lies near Santa Maria; the California codes we verified range from 0 to 30 in. Ask the building department for Santa Maria’s own number before you dig.
What frost line depth does Santa Maria use for footings under Table R301.2(1)?
How deep do footings, decks and water lines need to be in Santa Maria?
Drawn with the deepest California official value (30 in). Confirm Santa Maria’s own depth before you dig.
House or garage footing in Santa Maria: dig at least 30 in (76 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).
| 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 Santa Maria?
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Santa Maria never averages a low below freezing. 9 nights a year reach 32 °F or colder; Dec is coldest, with an average low of 40.1 °F.
NOAA 1991–2020 climate normals, Santa Maria Public Airport station, 2.3 mi away, elevation 242 ft.
Monthly temperatures as a table
| °F | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low | 41 | 42.5 | 44.3 | 45.4 | 48.7 | 51.6 | 54.9 | 55.1 | 53.7 | 49.8 | 44.3 | 40.1 |
| High | 64.7 | 64.8 | 66.3 | 68.1 | 69.3 | 71.3 | 73.3 | 73.8 | 75 | 74.6 | 70 | 64.3 |
Santa Maria has more freezing nights than 135 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 Santa Maria to heave?
USDA rates the sampled soil around Santa Maria as 100% none for frost action (main soils: Sorrento, Oceano, Mocho).
USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.
Santa Maria at a glance
- Frost line depth
- No official local value
- County
- Santa Barbara County
- Population (2023 est.)
- 109,987
- Mean annual temperature
- 58.6 °F
- ZIP codes (3)
- 93454 · 93455 · 93458