What is the soil temperature in ZIP code 20721 today?

About 56°F on average in the top 4 inches (0–10 cm), low 52°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 9.9 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 20721?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 31 and 55°F from May 6.

ZIP 20721 · Mitchellville, MD · Nov 11, 2026

Soil temperature for ZIP code 20721

56°Faverage today, 0–4 in deep (modelled)
low 52°F · high 58°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.9 km from the ZIP centre point

On a week ago

4° cooler

60°F on Nov 4

5-day mean

55°F

what the verdicts use

Held 55°F last spring

May 6

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	59.6°F	56.1°F	63.1°F	analysis
Nov 5	63.8°F	62.0°F	66.3°F	analysis
Nov 6	64.5°F	63.3°F	65.4°F	analysis
Nov 7	57.8°F	56.5°F	59.8°F	analysis
Nov 8	53.4°F	50.8°F	55.2°F	analysis
Nov 9	54.1°F	51.9°F	56.3°F	analysis
Nov 10	53.8°F	50.1°F	57.1°F	analysis
Today	55.5°F	51.7°F	58.2°F	analysis
Nov 12	55.2°F	53.3°F	56.4°F	forecast
Nov 13	51.4°F	49.8°F	53.7°F	forecast
Nov 14	45.4°F	42.9°F	46.7°F	forecast
Nov 15	44.4°F	41.6°F	46.7°F	forecast
Nov 16	44.5°F	40.9°F	47.3°F	forecast
Nov 17	44.9°F	41.7°F	47.2°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 1
50°F	Pre-emergent window opens	Mar 31
55°F	Crabgrass can germinate	May 6
60°F	Tomatoes	May 27
65°F	Warm-season grass seed	Jun 6

Bowie, MD, 6 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

20774 56°F · 20716 56°F · 20706 56°F · 20785 59°F · 20769 56°F · 20715 56°F · 20720 56°F · 20784 59°F

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

Questions

What is the soil temperature in ZIP code 20721 today?: About 56°F on average in the top 4 inches (0–10 cm), low 52°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 9.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 20721?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 31 and 55°F from May 6.

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).