What is the soil temperature in ZIP code 71721 today?

About 66°F on average in the top 4 inches (0–10 cm), low 63°F and high 69°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 12.8 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 71721?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 10 and 55°F from Feb 11.

ZIP 71721 · Arkadelphia, AR · Nov 11, 2026

Soil temperature for ZIP code 71721

66°Faverage today, 0–4 in deep (modelled)
low 63°F · high 69°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 12.8 km from the ZIP centre point

On a week ago

1° warmer

64°F on Nov 4

5-day mean

61°F

what the verdicts use

Held 55°F last spring

Feb 11

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
TomatoesSoil warm enough
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	64.4°F	62.7°F	65.8°F	analysis
Nov 5	63.1°F	60.4°F	66.1°F	analysis
Nov 6	63.9°F	62.5°F	65.2°F	analysis
Nov 7	60.6°F	59.3°F	62.4°F	analysis
Nov 8	58.8°F	56.4°F	61.1°F	analysis
Nov 9	58.7°F	55.8°F	61.8°F	analysis
Nov 10	60.5°F	58.0°F	63.8°F	analysis
Today	65.6°F	63.4°F	68.9°F	analysis
Nov 12	64.0°F	62.3°F	66.1°F	forecast
Nov 13	58.9°F	57.3°F	61.5°F	forecast
Nov 14	53.2°F	51.4°F	55.5°F	forecast
Nov 15	51.0°F	49.6°F	52.2°F	forecast
Nov 16	50.8°F	48.7°F	53.2°F	forecast
Nov 17	50.5°F	48.0°F	53.3°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 6
50°F	Pre-emergent window opens	Feb 10
55°F	Crabgrass can germinate	Feb 11
60°F	Tomatoes	Mar 2
65°F	Warm-season grass seed	May 12

Hot Springs, AR, 70 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

71772 67°F · 71743 66°F · 71857 67°F · 71728 66°F · 71722 67°F · 71962 66°F · 71922 66°F · 71923 66°F

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

Questions

What is the soil temperature in ZIP code 71721 today?: About 66°F on average in the top 4 inches (0–10 cm), low 63°F and high 69°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 12.8 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 71721?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 10 and 55°F from Feb 11.

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).