What is the soil temperature in ZIP code 46513 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 13.3 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 46513?

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 46513 · Plymouth, IN · Nov 11, 2026

Soil temperature for ZIP code 46513

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 13.3 km from the ZIP centre point

On a week ago

13° cooler

64°F on Nov 4

5-day mean

50°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	61.5°F	67.6°F	analysis
Nov 5	55.9°F	55.0°F	57.5°F	analysis
Nov 6	51.0°F	49.6°F	53.0°F	analysis
Nov 7	47.9°F	44.2°F	49.8°F	analysis
Nov 8	47.1°F	41.8°F	52.7°F	analysis
Nov 9	50.2°F	45.1°F	54.6°F	analysis
Nov 10	52.6°F	47.8°F	57.1°F	analysis
Today	51.8°F	47.6°F	55.4°F	analysis
Nov 12	48.2°F	45.3°F	50.5°F	forecast
Nov 13	41.8°F	38.4°F	43.5°F	forecast
Nov 14	41.1°F	39.9°F	42.1°F	forecast
Nov 15	40.9°F	38.6°F	43.7°F	forecast
Nov 16	40.7°F	36.8°F	44.2°F	forecast
Nov 17	41.1°F	36.6°F	45.2°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	Mar 6
50°F	Pre-emergent window opens	Apr 12
55°F	Crabgrass can germinate	May 16
60°F	Tomatoes	May 26
65°F	Warm-season grass seed	Jun 5

South Bend, IN, 39 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

46531 52°F · 46572 51°F · 46563 51°F · 46574 51°F · 46537 50°F · 46511 52°F · 46532 50°F · 46534 52°F

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

Questions

What is the soil temperature in ZIP code 46513 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 13.3 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 46513?: 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).