Frost Line Depth in Jackson, Tennessee
- 3 verified codes nearby
- Checked Oct 2026
No official local value
No official frost line depth is published for Jackson.
Nearby official codes require 5–13 in (3 verified codes).
Source and how we checked
We searched this place’s own code and website and found no published frost line depth.
Climate: 71 nights a year at or below 32 °F (NOAA 1991–2020, Jackson Exp Stn, 2.3 mi).
Checked Oct 2026. Report a correction
Does Jackson have an official frost line depth?
No adopted frost line depth found for Jackson in its official documents (checked Oct 2026). The nearest official values, from codes we verified, are 5 to 13 in. Use the deepest of them until the building department confirms Jackson’s own number.
What frost line depth does Jackson use for footings under Table R301.2(1)? Is it 13 in, like Madison County?
How deep do footings, decks and water lines need to be in Jackson?
Drawn with the deepest nearby official value (13 in). Confirm Jackson’s own depth before you dig.
House or garage footing in Jackson: dig at least 13 in (33 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).
| Project | Depth | Rule |
|---|---|---|
| House or garage footing | 13 in | Below the frost line and at least 12 in deep (IRC R403.1.4) |
| Deck footing (attached) | 13 in | Below the frost line and at least 12 in deep (IRC R507.3) |
| Water service line | 19 in | 6 in below the frost line and at least 12 in deep (IRC P2603.5) |
| Fence post bottom | 13 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 Jackson?
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Average lows are at or below freezing from Dec to Feb. 71 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 27.4 °F.
NOAA 1991–2020 climate normals, Jackson Exp Stn station, 2.3 mi away, elevation 400 ft.
Monthly temperatures as a table
| °F | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low | 27.4 | 30.4 | 38.8 | 47.8 | 57.9 | 65.9 | 69.3 | 67.4 | 60 | 47.6 | 37 | 30.9 |
| High | 48.5 | 53.1 | 62.3 | 72.5 | 80.2 | 87.5 | 90.6 | 90.3 | 84.8 | 74.2 | 61.4 | 51.7 |
Jackson has fewer freezing nights than 46 of the 59 other Tennessee places we track. The Tennessee median is 84. Coldest: Greene County; mildest: Memphis.
What frost line depth do towns near Jackson use?
3 official codes near Jackson are verified; each links to its document.
| Place | Verified frost line | Distance |
|---|---|---|
| Madison County | 13 in | 3 mi away |
| Shelby County | 5 in | 68 mi away |
| Memphis | 5 in | 74 mi away |
How likely is the soil in Jackson to heave?
USDA rates the sampled soil around Jackson as 100% none for frost action (main soils: Feliciana, Lexington, Loring).
USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.
Jackson at a glance
- Frost line depth
- No official local value
- County
- Madison County
- Population (2023 est.)
- 68,264
- Mean annual temperature
- 59.9 °F
- ZIP codes (3)
- 38301 · 38305 · 38343