What is the soil temperature in ZIP code 66413 today?

About 57°F on average in the top 4 inches (0–10 cm), low 55°F and high 59°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 10.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 66413?

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 66413 · Topeka, KS · Nov 11, 2026

Soil temperature for ZIP code 66413

57°Faverage today, 0–4 in deep (modelled)
low 55°F · high 59°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.6 km from the ZIP centre point

On a week ago

1° warmer

56°F on Nov 4

5-day mean

53°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	55.6°F	54.1°F	57.9°F	analysis
Nov 5	52.2°F	49.4°F	54.7°F	analysis
Nov 6	49.2°F	46.9°F	50.8°F	analysis
Nov 7	46.2°F	42.9°F	49.7°F	analysis
Nov 8	49.9°F	45.6°F	56.0°F	analysis
Nov 9	54.6°F	51.0°F	59.3°F	analysis
Nov 10	56.4°F	52.8°F	60.5°F	analysis
Today	56.9°F	55.1°F	58.6°F	analysis
Nov 12	52.4°F	50.5°F	54.6°F	forecast
Nov 13	45.4°F	42.6°F	47.1°F	forecast
Nov 14	41.9°F	39.0°F	44.5°F	forecast
Nov 15	44.2°F	43.2°F	46.2°F	forecast
Nov 16	45.2°F	42.0°F	48.5°F	forecast
Nov 17	45.7°F	42.4°F	49.4°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 8
50°F	Pre-emergent window opens	Mar 21
55°F	Crabgrass can germinate	Mar 22
60°F	Tomatoes	May 13
65°F	Warm-season grass seed	May 28

Topeka, KS, 36 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

66431 57°F · 66537 57°F · 66402 57°F · 66523 57°F · 66414 57°F · 66546 57°F · 66423 57°F · 66610 57°F

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

Questions

What is the soil temperature in ZIP code 66413 today?: About 57°F on average in the top 4 inches (0–10 cm), low 55°F and high 59°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 10.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 66413?: 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).