What is the soil temperature in ZIP code 45671 today?

About 53°F on average in the top 4 inches (0–10 cm), low 50°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 3.3 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 45671?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 30 and 55°F from May 9.

ZIP 45671 · Portsmouth, OH · Nov 11, 2026

Soil temperature for ZIP code 45671

53°Faverage today, 0–4 in deep (modelled)
low 50°F · high 55°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 3.3 km from the ZIP centre point

On a week ago

8° cooler

61°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

May 9

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	60.9°F	60.6°F	61.1°F	analysis
Nov 5	59.6°F	58.4°F	61.3°F	analysis
Nov 6	54.3°F	52.7°F	56.4°F	analysis
Nov 7	48.1°F	46.2°F	49.2°F	analysis
Nov 8	46.3°F	43.2°F	49.5°F	analysis
Nov 9	48.7°F	45.4°F	51.8°F	analysis
Nov 10	50.4°F	46.5°F	54.9°F	analysis
Today	53.1°F	50.3°F	55.4°F	analysis
Nov 12	51.4°F	49.6°F	53.4°F	forecast
Nov 13	44.4°F	43.1°F	46.2°F	forecast
Nov 14	39.6°F	38.1°F	41.1°F	forecast
Nov 15	40.5°F	36.9°F	43.5°F	forecast
Nov 16	40.5°F	37.2°F	43.4°F	forecast
Nov 17	41.4°F	37.9°F	44.7°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 30
55°F	Crabgrass can germinate	May 9
60°F	Tomatoes	May 19
65°F	Warm-season grass seed	Jun 7

Portsmouth, OH, 34 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

45660 53°F · 45646 53°F · 45657 54°F · 45661 53°F · 45172 53°F · 45642 53°F · 45652 54°F · 45648 53°F

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

Questions

What is the soil temperature in ZIP code 45671 today?: About 53°F on average in the top 4 inches (0–10 cm), low 50°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 3.3 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 45671?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 30 and 55°F from May 9.

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).