Frost Line Depth in Monterey Park, California
- 4 verified codes nearby
- Checked Oct 2026
No official local value
Frost rarely reaches the ground in Monterey Park.
Nearby official codes require 12 in (4 verified codes).
Footings still go at least 12 in (30 cm) below undisturbed ground (IRC R403.1.4).
Source and how we checked
We searched this place’s own code and website and found no published frost line depth.
Climate: 1 night a year at or below 32 °F (NOAA 1991–2020, San Gabriel Fire Dept, 3.1 mi).
Checked Oct 2026. Report a correction
Does Monterey Park have an official frost line depth?
No adopted frost line depth found for Monterey Park 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 Monterey Park’s own number.
What frost line depth does Monterey Park use for footings under Table R301.2(1)? Is it 12 in, like Whittier?
How deep do footings, decks and water lines need to be in Monterey Park?
Drawn with the deepest nearby official value (12 in). Confirm Monterey Park’s own depth before you dig.
House or garage footing in Monterey Park: 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 | 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 Monterey Park?
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Monterey Park never averages a low below freezing. 1 night a year reach 32 °F or colder; Dec is coldest, with an average low of 45.3 °F.
NOAA 1991–2020 climate normals, San Gabriel Fire Dept station, 3.1 mi away, elevation 363 ft.
Monthly temperatures as a table
| °F | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low | 46.1 | 47.1 | 50.5 | 52.7 | 57.6 | 61.5 | 65.2 | 65.5 | 63.6 | 57.4 | 50.6 | 45.3 |
| High | 68.6 | 68.2 | 70.9 | 73.8 | 75.6 | 80.8 | 85.5 | 87.6 | 86.7 | 80.7 | 74 | 67.8 |
Monterey Park has fewer freezing nights than 135 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 Monterey Park use?
4 official codes near Monterey Park are verified; each links to its document.
How likely is the soil in Monterey Park to heave?
USDA rates the sampled soil around Monterey Park as 100% none for frost action (main soils: Counterfeit, Azuvina, Montebello).
USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.
Monterey Park at a glance
- Frost line depth
- No official local value
- County
- Los Angeles County
- Population (2023 est.)
- 57,877
- Mean annual temperature
- 66 °F
- ZIP codes (6)
- 90022 · 90063 · 91754 · 91755 · 91770 · 91803