What is the soil temperature in ZIP code 47921 today?

About 53°F on average in the top 4 inches (0–10 cm), low 49°F and high 58°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 10.8 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 47921?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 11 and 55°F from May 12.

ZIP 47921 · West Lafayette, IN · Nov 11, 2026

Soil temperature for ZIP code 47921

53°Faverage today, 0–4 in deep (modelled)
low 49°F · high 58°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.8 km from the ZIP centre point

On a week ago

11° cooler

64°F on Nov 4

5-day mean

50°F

what the verdicts use

Held 55°F last spring

May 12

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	64.1°F	61.6°F	66.9°F	analysis
Nov 5	57.3°F	55.5°F	58.6°F	analysis
Nov 6	53.4°F	51.9°F	55.5°F	analysis
Nov 7	46.1°F	42.5°F	48.7°F	analysis
Nov 8	46.4°F	41.6°F	52.1°F	analysis
Nov 9	50.2°F	45.8°F	54.8°F	analysis
Nov 10	53.6°F	49.6°F	57.9°F	analysis
Today	53.4°F	48.8°F	58.1°F	analysis
Nov 12	51.0°F	48.6°F	53.9°F	forecast
Nov 13	43.5°F	41.7°F	45.1°F	forecast
Nov 14	40.0°F	36.4°F	42.9°F	forecast
Nov 15	41.3°F	37.8°F	44.8°F	forecast
Nov 16	41.3°F	37.0°F	44.8°F	forecast
Nov 17	41.3°F	36.6°F	45.5°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 6
50°F	Pre-emergent window opens	Apr 11
55°F	Crabgrass can germinate	May 12
60°F	Tomatoes	May 18
65°F	Warm-season grass seed	Jun 6

Lafayette, IN, 43 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

47917 54°F · 47975 53°F · 47971 53°F · 47986 53°F · 47944 53°F · 47993 54°F · 47970 53°F · 47991 54°F

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

Questions

What is the soil temperature in ZIP code 47921 today?: About 53°F on average in the top 4 inches (0–10 cm), low 49°F and high 58°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 10.8 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 47921?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 11 and 55°F from May 12.

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).