What is the soil temperature in ZIP code 46407 today?

About 52°F on average in the top 4 inches (0–10 cm), low 49°F and high 54°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 11 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 46407?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 12 and 55°F from May 16.

ZIP 46407 · Gary, IN · Nov 11, 2026

Soil temperature for ZIP code 46407

52°Faverage today, 0–4 in deep (modelled)
low 49°F · high 54°F

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

On a week ago

13° cooler

64°F on Nov 4

5-day mean

51°F

what the verdicts use

Held 55°F last spring

May 16

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	64.5°F	61.7°F	67.4°F	analysis
Nov 5	56.6°F	55.6°F	58.6°F	analysis
Nov 6	50.1°F	48.5°F	53.0°F	analysis
Nov 7	47.5°F	44.3°F	49.8°F	analysis
Nov 8	48.1°F	43.6°F	53.3°F	analysis
Nov 9	51.9°F	47.8°F	55.6°F	analysis
Nov 10	53.4°F	49.9°F	56.1°F	analysis
Today	51.9°F	49.4°F	54.1°F	analysis
Nov 12	48.4°F	46.1°F	50.5°F	forecast
Nov 13	43.2°F	42.2°F	44.9°F	forecast
Nov 14	42.2°F	39.9°F	44.1°F	forecast
Nov 15	44.3°F	43.4°F	45.5°F	forecast
Nov 16	46.2°F	44.0°F	48.5°F	forecast
Nov 17	43.5°F	39.5°F	46.4°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	Mar 7
50°F	Pre-emergent window opens	Apr 12
55°F	Crabgrass can germinate	May 16
60°F	Tomatoes	May 25
65°F	Warm-season grass seed	Jun 5

Portage, IN, 13 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

46409 52°F · 46404 52°F · 46402 52°F · 46408 52°F · 46405 52°F · 46403 52°F · 46406 53°F · 46342 52°F

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

Questions

What is the soil temperature in ZIP code 46407 today?: About 52°F on average in the top 4 inches (0–10 cm), low 49°F and high 54°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 11 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 46407?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 12 and 55°F from May 16.

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).