What is the soil temperature in ZIP code 72121 today?

About 61°F on average in the top 4 inches (0–10 cm), low 58°F and high 66°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 5.9 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 72121?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 13 and 55°F from Mar 2.

ZIP 72121 · Searcy, AR · Nov 11, 2026

Soil temperature for ZIP code 72121

61°Faverage today, 0–4 in deep (modelled)
low 58°F · high 66°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 5.9 km from the ZIP centre point

On a week ago

1° cooler

62°F on Nov 4

5-day mean

56°F

what the verdicts use

Held 55°F last spring

Mar 2

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
TomatoesToo cold
Peas and lettuceWarm enough

From the 5-day mean of the modelled 0–4 in layer.

Soil temperature, 0–4 in: last 7 days and next 7

°F, modelled. Dots and line: daily average (dashed = forecast); bars: low to high; green band: 50–55°F.

View as table

Day	Average	Low	High
Nov 4	62.5°F	60.9°F	64.4°F	analysis
Nov 5	60.4°F	57.0°F	64.1°F	analysis
Nov 6	60.4°F	58.9°F	61.8°F	analysis
Nov 7	54.3°F	52.1°F	56.2°F	analysis
Nov 8	52.9°F	49.2°F	57.1°F	analysis
Nov 9	54.6°F	50.6°F	58.9°F	analysis
Nov 10	56.7°F	52.5°F	61.5°F	analysis
Today	61.3°F	57.8°F	66.2°F	analysis
Nov 12	60.4°F	58.8°F	63.1°F	forecast
Nov 13	51.9°F	49.9°F	55.5°F	forecast
Nov 14	46.5°F	43.3°F	49.1°F	forecast
Nov 15	45.6°F	43.2°F	48.0°F	forecast
Nov 16	46.6°F	43.5°F	49.9°F	forecast
Nov 17	47.0°F	43.8°F	50.4°F	forecast

Source: NOAA NCEP GFS 0.25°, 0–10 cm soil temperature, run Nov 11, 12:00 UTC (7 am Eastern).

Spring 2026 threshold dates

From the 5-day mean held for 10 days or more.

Soil	What it means	Held from (spring 2026)
40°F	Peas and lettuce	Feb 8
50°F	Pre-emergent window opens	Feb 13
55°F	Crabgrass can germinate	Mar 2
60°F	Tomatoes	Apr 11
65°F	Warm-season grass seed	May 17

Searcy, AR, 23 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

72179 61°F · 72085 62°F · 72081 61°F · 72534 61°F · 72568 62°F · 72543 61°F · 72581 61°F · 72546 61°F

More: crabgrass timing in Arkansas · every Arkansas city · how accurate the model is.

Questions

What is the soil temperature in ZIP code 72121 today?: About 61°F on average in the top 4 inches (0–10 cm), low 58°F and high 66°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 5.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 72121?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 13 and 55°F from Mar 2.

Data: Global Forecast System (GFS) 0.25°, soil temperature 0–10 cm (TSOIL) (NOAA National Centers for Environmental Prediction (NCEP)); 2025 Gazetteer ZIP Code Tabulation Areas (ZCTA) and 2024 cartographic boundary state outlines (U.S. Census Bureau).