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Frost depth by ZIP code / Nov 3, 2026 readings

Is the ground frozen yet?

2 of 300 soil stations reporting on Nov 3, 2026 are frozen at 2 inches.

Of those, 1 is frozen down to 2 inches, 1 is frozen down to 40 inches.

Frost depth for your city

Enter your city or ZIP code to see today's frost depth there and its typical freeze and thaw dates.

  1. 2 in2 of 300
  2. 4 in1 of 290
  3. 8 in1 of 263
  4. 20 in1 of 264
  5. 40 in1 of 261
Ice: the share of the stations reporting each depth that are frozen there

When the ground freezes

Frost season, state by state

Typical first freeze to last thaw at 2 inches: the middle of each state’s stations that freeze in a typical winter. The squares show how deep the ground typically freezes at the deepest of those stations, across 2, 4, 8, 20 and 40 inches.

  • AlaskaNov 4 → May 9 · 2 stations
    Alaska: typically frozen at 2 inches from Nov 4 → May 9; the deepest station typically freezes to 40 in.
    40 in
  • CaliforniaNov 18 → Feb 11 · 6 stations
    California: typically frozen at 2 inches from Nov 18 → Feb 11; the deepest station typically freezes to 8 in.
    8 in
  • MontanaNov 25 → Mar 12 · 13 stations
    Montana: typically frozen at 2 inches from Nov 25 → Mar 12; the deepest station typically freezes to 40 in.
    40 in
  • OregonNov 25 → Feb 28 · 1 station
    Oregon: typically frozen at 2 inches from Nov 25 → Feb 28; the deepest station typically freezes to 8 in.
    8 in
  • NevadaNov 28 → Feb 10 · 9 stations
    Nevada: typically frozen at 2 inches from Nov 28 → Feb 10; the deepest station typically freezes to 8 in.
    8 in
  • WyomingNov 28 → Mar 21 · 4 stations
    Wyoming: typically frozen at 2 inches from Nov 28 → Mar 21; the deepest station typically freezes to 20 in.
    20 in
  • ColoradoNov 29 → Feb 24 · 8 stations
    Colorado: typically frozen at 2 inches from Nov 29 → Feb 24; the deepest station typically freezes to 20 in.
    20 in
  • UtahNov 29 → Feb 17 · 34 stations
    Utah: typically frozen at 2 inches from Nov 29 → Feb 17; the deepest station typically freezes to 40 in.
    40 in
  • IdahoNov 30 → Feb 20 · 4 stations
    Idaho: typically frozen at 2 inches from Nov 30 → Feb 20; the deepest station typically freezes to 8 in.
    8 in
  • MinnesotaDec 4 → Apr 2 · 4 stations
    Minnesota: typically frozen at 2 inches from Dec 4 → Apr 2; the deepest station typically freezes to 20 in.
    20 in
  • North DakotaDec 5 → Apr 1 · 4 stations
    North Dakota: typically frozen at 2 inches from Dec 5 → Apr 1; the deepest station typically freezes to 20 in.
    20 in
  • New MexicoDec 11 → Feb 2 · 4 stations
    New Mexico: typically frozen at 2 inches from Dec 11 → Feb 2; the deepest station typically freezes to 8 in.
    8 in
  • NebraskaDec 16 → Feb 24 · 5 stations
    Nebraska: typically frozen at 2 inches from Dec 16 → Feb 24; the deepest station typically freezes to 20 in.
    20 in
  • South DakotaDec 18 → Mar 19 · 5 stations
    South Dakota: typically frozen at 2 inches from Dec 18 → Mar 19; the deepest station typically freezes to 40 in.
    40 in
  • WisconsinDec 24 → Mar 12 · 2 stations
    Wisconsin: typically frozen at 2 inches from Dec 24 → Mar 12; the deepest station typically freezes to 20 in.
    20 in
  • ArizonaDec 25 → Jan 18 · 1 station
    Arizona: typically frozen at 2 inches from Dec 25 → Jan 18; the deepest station typically freezes to 2 in.
    2 in
  • MaineDec 25 → Apr 2 · 2 stations
    Maine: typically frozen at 2 inches from Dec 25 → Apr 2; the deepest station typically freezes to 8 in.
    8 in
  • IowaJan 4 → Mar 9 · 2 stations
    Iowa: typically frozen at 2 inches from Jan 4 → Mar 9; the deepest station typically freezes to 8 in.
    8 in
  • IllinoisJan 7 → Feb 7 · 3 stations
    Illinois: typically frozen at 2 inches from Jan 7 → Feb 7; the deepest station typically freezes to at least 8 in.
    at least 8 in
  • Rhode IslandJan 7 → Mar 4 · 1 station
    Rhode Island: typically frozen at 2 inches from Jan 7 → Mar 4; the deepest station typically freezes to 4 in.
    4 in
  • MichiganJan 9 → Apr 1 · 1 station
    Michigan: typically frozen at 2 inches from Jan 9 → Apr 1; the deepest station typically freezes to 4 in.
    4 in
  • New YorkJan 10 → Feb 12 · 2 stations
    New York: typically frozen at 2 inches from Jan 10 → Feb 12; the deepest station typically freezes to 4 in.
    4 in
  • PennsylvaniaJan 11 → Feb 25 · 2 stations
    Pennsylvania: typically frozen at 2 inches from Jan 11 → Feb 25; the deepest station typically freezes to 4 in.
    4 in
  • KansasJan 14 → Feb 5 · 3 stations
    Kansas: typically frozen at 2 inches from Jan 14 → Feb 5; the deepest station typically freezes to 4 in.
    4 in
  • TexasJan 15 → Jan 23 · 2 stations
    Texas: typically frozen at 2 inches from Jan 15 → Jan 23; the deepest station typically freezes to 4 in.
    4 in
  • MissouriJan 19 → Feb 1 · 10 stations
    Missouri: typically frozen at 2 inches from Jan 19 → Feb 1; the deepest station typically freezes to 4 in.
    4 in
  • New HampshireJan 19 → Mar 10 · 2 stations
    New Hampshire: typically frozen at 2 inches from Jan 19 → Mar 10; the deepest station typically freezes to 4 in.
    4 in
  • VirginiaJan 20 → Jan 28 · 1 station
    Virginia: typically frozen at 2 inches from Jan 20 → Jan 28; the deepest station typically freezes to 2 in.
    2 in
  • OklahomaJan 21 → Jan 28 · 1 station
    Oklahoma: typically frozen at 2 inches from Jan 21 → Jan 28; the deepest station typically freezes to 2 in.
    2 in
  • IndianaJan 23 → Jan 31 · 1 station
    Indiana: typically frozen at 2 inches from Jan 23 → Jan 31; the deepest station typically freezes to 4 in.
    4 in
  • WashingtonJan 23 → Mar 2 · 3 stations
    Washington: typically frozen at 2 inches from Jan 23 → Mar 2; the deepest station typically freezes to 8 in.
    8 in
  • KentuckyJan 26 → Jan 31 · 1 station
    Kentucky: typically frozen at 2 inches from Jan 26 → Jan 31; the deepest station typically freezes to 2 in.
    2 in

Froze at 2 inches in some winters, without typical dates: Alabama · Massachusetts · North Carolina · Ohio

Station by station

Where the ground is frozen now

StateStationFrozen depthsFrost depthReading date
AKKanuti LakeAt least 40 in (every depth)Nov 3, 2026
CABodie HillsBetween 2 and 4 inNov 3, 2026

A depth counts as frozen when its daily reading is at or below 32°F, and a freeze counts once it lasts 3 days. Frost depth is given as a range between two probes, the deepest frozen one and the first thawed one below it. USDA SCAN stations report the reading at the start of each day and NOAA USCRN stations a daily average. A depth that reads frozen under warm soil above it is treated as a faulty probe and left out.

Frost depth and the frost line

Frost depth is how far down the ground is frozen right now, read from soil temperature probes at 2, 4, 8, 20 and 40 inches at USDA and NOAA monitoring stations. The frost line is a building code’s design depth, set near the deepest freeze on record so footings sit below it; your local building office has the figure that applies to you.

Our station readings come from one grass-covered site per station at five fixed depths, and often show shallower frost than regional figures. For how frost, ground freeze and frost depth differ, see the first frost and frost depth guide.

For the last lawn jobs before the ground freezes: