What is the soil temperature in ZIP code 57790 today?

About 51°F on average in the top 4 inches (0–10 cm), low 48°F and high 55°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 12.2 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 57790?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from May 10.

ZIP 57790 · South Dakota · Nov 11, 2026

Soil temperature for ZIP code 57790

51°Faverage today, 0–4 in deep (modelled)
low 48°F · high 55°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 12.2 km from the ZIP centre point

On a week ago

7° warmer

44°F on Nov 4

5-day mean

50°F

what the verdicts use

Held 55°F last spring

May 10

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	44.3°F	40.9°F	48.0°F	analysis
Nov 5	46.3°F	42.2°F	51.4°F	analysis
Nov 6	46.0°F	41.8°F	51.0°F	analysis
Nov 7	48.1°F	43.3°F	54.4°F	analysis
Nov 8	50.1°F	45.6°F	55.8°F	analysis
Nov 9	52.2°F	48.8°F	55.9°F	analysis
Nov 10	50.2°F	46.2°F	55.3°F	analysis
Today	51.1°F	47.8°F	54.9°F	analysis
Nov 12	48.0°F	45.1°F	50.8°F	forecast
Nov 13	44.8°F	40.9°F	49.7°F	forecast
Nov 14	46.9°F	43.7°F	51.2°F	forecast
Nov 15	49.0°F	44.9°F	54.9°F	forecast
Nov 16	51.3°F	48.2°F	55.2°F	forecast
Nov 17	51.4°F	47.2°F	56.2°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 7
50°F	Pre-emergent window opens	Mar 21
55°F	Crabgrass can germinate	May 10
60°F	Tomatoes	May 25
65°F	Warm-season grass seed	May 27

This ZIP code area covers about 736 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.

57775 51°F · 57791 51°F · 57767 51°F · 57567 50°F · 57780 52°F · 57761 51°F · 57725 51°F · 57748 51°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 57790 today?: About 51°F on average in the top 4 inches (0–10 cm), low 48°F and high 55°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 12.2 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 57790?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from May 10.

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).