What is the soil temperature in ZIP code 46220 today?

About 57°F on average in the top 4 inches (0–10 cm), low 52°F and high 61°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 16 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 46220?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 22 and 55°F from Apr 12.

ZIP 46220 · Broad Ripple, IN · Nov 11, 2026

Soil temperature for ZIP code 46220

57°Faverage today, 0–4 in deep (modelled)
low 52°F · high 61°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 16 km from the ZIP centre point

On a week ago

9° cooler

66°F on Nov 4

5-day mean

53°F

what the verdicts use

Held 55°F last spring

Apr 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	65.6°F	64.1°F	67.9°F	analysis
Nov 5	59.1°F	55.3°F	60.8°F	analysis
Nov 6	54.7°F	52.7°F	57.5°F	analysis
Nov 7	49.8°F	46.2°F	52.5°F	analysis
Nov 8	50.1°F	44.9°F	55.4°F	analysis
Nov 9	53.7°F	48.8°F	57.8°F	analysis
Nov 10	55.9°F	50.8°F	60.9°F	analysis
Today	56.7°F	51.7°F	61.0°F	analysis
Nov 12	51.9°F	49.0°F	55.2°F	forecast
Nov 13	44.3°F	42.2°F	45.6°F	forecast
Nov 14	42.9°F	39.5°F	45.8°F	forecast
Nov 15	43.9°F	39.8°F	47.0°F	forecast
Nov 16	43.6°F	39.3°F	46.8°F	forecast
Nov 17	44.3°F	39.3°F	48.5°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	Feb 28
50°F	Pre-emergent window opens	Mar 22
55°F	Crabgrass can germinate	Apr 12
60°F	Tomatoes	May 17
65°F	Warm-season grass seed	May 27

Indianapolis, IN, 12 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

46240 54°F · 46205 58°F · 46250 54°F · 46226 57°F · 46218 57°F · 46260 53°F · 46208 58°F · 46280 53°F

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

Questions

What is the soil temperature in ZIP code 46220 today?: About 57°F on average in the top 4 inches (0–10 cm), low 52°F and high 61°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 16 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 46220?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 22 and 55°F from Apr 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).