What is the soil temperature in ZIP code 46374 today?

About 52°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 9.8 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 46374?

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 12.

ZIP 46374 · Valparaiso, IN · Nov 11, 2026

Soil temperature for ZIP code 46374

52°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 9.8 km from the ZIP centre point

On a week ago

13° cooler

65°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	64.7°F	61.8°F	67.8°F	analysis
Nov 5	56.4°F	55.2°F	58.2°F	analysis
Nov 6	50.7°F	49.2°F	53.2°F	analysis
Nov 7	47.1°F	42.7°F	50.0°F	analysis
Nov 8	47.4°F	41.8°F	53.4°F	analysis
Nov 9	50.7°F	45.2°F	55.6°F	analysis
Nov 10	53.3°F	48.3°F	57.8°F	analysis
Today	52.1°F	47.9°F	54.9°F	analysis
Nov 12	48.6°F	46.8°F	49.9°F	forecast
Nov 13	42.1°F	40.9°F	44.0°F	forecast
Nov 14	40.9°F	37.7°F	43.8°F	forecast
Nov 15	43.8°F	42.3°F	45.0°F	forecast
Nov 16	44.6°F	41.5°F	47.6°F	forecast
Nov 17	42.5°F	37.3°F	46.3°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	Mar 6
50°F	Pre-emergent window opens	Apr 12
55°F	Crabgrass can germinate	May 12
60°F	Tomatoes	May 18
65°F	Warm-season grass seed	Jun 5

Portage, IN, 47 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

46366 52°F · 46348 52°F · 47957 53°F · 46392 52°F · 46347 52°F · 46340 50°F · 46390 50°F · 47946 53°F

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

Questions

What is the soil temperature in ZIP code 46374 today?: About 52°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 9.8 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 46374?: 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 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).