What is the soil temperature in ZIP code 57651 today?

About 48°F on average in the top 4 inches (0–10 cm), low 45°F and high 52°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 3.7 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 57651?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 10 and 55°F from May 25.

ZIP 57651 · South Dakota · Nov 11, 2026

Soil temperature for ZIP code 57651

48°Faverage today, 0–4 in deep (modelled)
low 45°F · high 52°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 3.7 km from the ZIP centre point

On a week ago

5° warmer

43°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

May 25

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	43.0°F	39.2°F	47.7°F	analysis
Nov 5	43.8°F	39.9°F	48.1°F	analysis
Nov 6	44.4°F	39.9°F	50.5°F	analysis
Nov 7	47.6°F	43.4°F	52.7°F	analysis
Nov 8	48.2°F	44.3°F	53.2°F	analysis
Nov 9	50.3°F	47.9°F	53.1°F	analysis
Nov 10	48.3°F	44.9°F	52.6°F	analysis
Today	48.2°F	45.4°F	51.8°F	analysis
Nov 12	44.9°F	42.2°F	47.4°F	forecast
Nov 13	41.1°F	38.2°F	43.9°F	forecast
Nov 14	41.5°F	38.2°F	46.2°F	forecast
Nov 15	44.7°F	40.7°F	50.2°F	forecast
Nov 16	47.3°F	43.3°F	52.6°F	forecast
Nov 17	48.2°F	44.2°F	52.7°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	Mar 20
50°F	Pre-emergent window opens	May 10
55°F	Crabgrass can germinate	May 25
60°F	Tomatoes	May 27
65°F	Warm-season grass seed	not reached

This ZIP code area covers about 444 square miles; the reading is for the model grid cell nearest its Census centre point, which can be far from where you are. Try a neighbouring ZIP if it looks off.

Nearby ZIP codes

Today's modelled average.

57649 48°F · 57650 47°F · 57620 48°F · 57640 47°F · 57720 49°F · 57776 49°F · 57755 47°F · 57758 50°F

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

Questions

What is the soil temperature in ZIP code 57651 today?: About 48°F on average in the top 4 inches (0–10 cm), low 45°F and high 52°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 3.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 57651?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 10 and 55°F from May 25.

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).