What is the soil temperature in ZIP code 45840 today?

About 50°F on average in the top 4 inches (0–10 cm), low 46°F and high 53°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 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 45840?

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 17.

ZIP 45840 · Findlay, OH · Nov 11, 2026

Soil temperature for ZIP code 45840

50°Faverage today, 0–4 in deep (modelled)
low 46°F · high 53°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9 km from the ZIP centre point

On a week ago

13° cooler

64°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

May 17

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	63.5°F	63.1°F	63.8°F	analysis
Nov 5	59.4°F	56.8°F	61.8°F	analysis
Nov 6	54.8°F	53.6°F	56.8°F	analysis
Nov 7	49.5°F	47.4°F	50.3°F	analysis
Nov 8	46.9°F	42.3°F	51.6°F	analysis
Nov 9	49.2°F	45.2°F	52.5°F	analysis
Nov 10	51.0°F	46.5°F	55.4°F	analysis
Today	50.2°F	46.1°F	53.4°F	analysis
Nov 12	49.9°F	48.7°F	51.6°F	forecast
Nov 13	43.5°F	42.0°F	45.2°F	forecast
Nov 14	39.1°F	35.2°F	41.8°F	forecast
Nov 15	39.0°F	34.8°F	42.1°F	forecast
Nov 16	39.6°F	34.3°F	44.1°F	forecast
Nov 17	41.5°F	36.4°F	45.8°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 17
60°F	Tomatoes	May 27
65°F	Warm-season grass seed	Jun 7

Findlay, OH, 2 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

45816 50°F · 44804 50°F · 45890 50°F · 45889 50°F · 45881 50°F · 45814 50°F · 45858 50°F · 45867 50°F

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

Questions

What is the soil temperature in ZIP code 45840 today?: About 50°F on average in the top 4 inches (0–10 cm), low 46°F and high 53°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 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 45840?: 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 17.

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).