Frost Line Depth in Conway, AR: Arkansas Codes Range 12

No official local value

No official frost line depth is published for Conway.

No verified code nearby; verified Arkansas codes range 12–18 in.

Source and how we checked

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

Climate: 66 nights a year at or below 32 °F (NOAA 1991–2020, Conway, 2.4 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

12–18 inrange of verified Arkansas codes
66nights a year at or below 32 °F
100%of nearby soil rated “none” for frost action (USDA)

Does Conway have an official frost line depth?

No adopted frost line depth found for Conway in its official documents (checked Oct 2026). No verified code lies near Conway; the Arkansas codes we verified range from 12 to 18 in. Ask the building department for Conway’s own number before you dig.

What frost line depth does Conway 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 Conway building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 18 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 Conway?

Drawn with the deepest Arkansas official value (18 in). Confirm Conway’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Conway: dig at least 18 in (46 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 18 in until Conway confirms its own
Project	Depth	Rule
House or garage footing	18 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	18 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	24 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	18 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 Conway?

Average lows are at or below freezing from Dec to Feb. 66 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 27.1 °F.

NOAA 1991–2020 climate normals, Conway station, 2.4 mi away, elevation 312 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	27.1	30.4	39	47.4	57.5	66.1	69.6	68.4	60.5	48.3	37.7	30
High	49	54.1	63	72	79.4	87.3	91.7	91.4	84.7	73.9	61	51.6

Conway has fewer freezing nights than 12 of the 25 other Arkansas places we track. The Arkansas median is 66. Coldest: Benton County; mildest: Miller County.

How likely is the soil in Conway to heave?

None 100%

USDA rates the sampled soil around Conway as 100% none for frost action (main soils: Leadvale, Taft, Mountainburg).

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

Conway at a glance

Frost line depth: No official local value
County: Faulkner County
Population (2023 est.): 69,580
Mean annual temperature: 60.1 °F
ZIP codes (4): 72032 · 72034 · 72035 · 72106