What is the soil temperature in ZIP code 66066 today?

About 56°F on average in the top 4 inches (0–10 cm), low 54°F and high 57°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 8.7 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 66066?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from Mar 22.

ZIP 66066 · Tonganoxie, KS · Nov 11, 2026

Soil temperature for ZIP code 66066

56°Faverage today, 0–4 in deep (modelled)
low 54°F · high 57°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 8.7 km from the ZIP centre point

On a week ago

No change

56°F on Nov 4

5-day mean

52°F

what the verdicts use

Held 55°F last spring

Mar 22

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	56.2°F	55.3°F	58.4°F	analysis
Nov 5	51.6°F	49.4°F	53.2°F	analysis
Nov 6	49.9°F	48.5°F	51.2°F	analysis
Nov 7	45.9°F	43.1°F	48.5°F	analysis
Nov 8	48.7°F	45.1°F	54.2°F	analysis
Nov 9	53.3°F	49.9°F	58.0°F	analysis
Nov 10	55.7°F	52.5°F	59.5°F	analysis
Today	55.8°F	54.2°F	57.2°F	analysis
Nov 12	51.1°F	49.9°F	53.7°F	forecast
Nov 13	43.9°F	41.5°F	45.4°F	forecast
Nov 14	40.8°F	39.6°F	42.6°F	forecast
Nov 15	41.8°F	40.7°F	43.8°F	forecast
Nov 16	44.7°F	42.6°F	47.7°F	forecast
Nov 17	44.9°F	41.8°F	48.2°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	Feb 10
50°F	Pre-emergent window opens	Mar 21
55°F	Crabgrass can germinate	Mar 22
60°F	Tomatoes	May 14
65°F	Warm-season grass seed	May 28

Lawrence, KS, 27 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

66070 56°F · 66054 56°F · 66073 57°F · 66097 56°F · 66512 56°F · 66088 56°F · 66429 57°F · 66050 57°F

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

Questions

What is the soil temperature in ZIP code 66066 today?: About 56°F on average in the top 4 inches (0–10 cm), low 54°F and high 57°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 8.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 66066?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from Mar 22.

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).