What is the soil temperature in ZIP code 54840 today?

About 48°F on average in the top 4 inches (0–10 cm), low 47°F and high 49°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 4.5 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 54840?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 15 and 55°F from May 26.

ZIP 54840 · Wisconsin · Nov 11, 2026

Soil temperature for ZIP code 54840

48°Faverage today, 0–4 in deep (modelled)
low 47°F · high 49°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 4.5 km from the ZIP centre point

On a week ago

7° cooler

55°F on Nov 4

5-day mean

45°F

what the verdicts use

Held 55°F last spring

May 26

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	54.6°F	53.4°F	55.3°F	analysis
Nov 5	48.0°F	44.8°F	51.6°F	analysis
Nov 6	40.5°F	38.1°F	43.7°F	analysis
Nov 7	41.4°F	37.2°F	46.7°F	analysis
Nov 8	45.8°F	42.5°F	48.8°F	analysis
Nov 9	45.5°F	41.6°F	50.3°F	analysis
Nov 10	46.5°F	42.0°F	50.6°F	analysis
Today	48.0°F	46.7°F	49.4°F	analysis
Nov 12	39.6°F	38.1°F	42.8°F	forecast
Nov 13	37.0°F	36.2°F	37.9°F	forecast
Nov 14	35.3°F	34.8°F	36.1°F	forecast
Nov 15	35.5°F	34.6°F	37.7°F	forecast
Nov 16	38.5°F	34.5°F	44.0°F	forecast
Nov 17	42.0°F	38.6°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	Apr 12
50°F	Pre-emergent window opens	May 15
55°F	Crabgrass can germinate	May 26
60°F	Tomatoes	May 28
65°F	Warm-season grass seed	not reached

Andover, MN, 74 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

54006 48°F · 55063 47°F · 55069 47°F · 54872 47°F · 54853 47°F · 54837 47°F · 54024 48°F · 55032 48°F

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

Questions

What is the soil temperature in ZIP code 54840 today?: About 48°F on average in the top 4 inches (0–10 cm), low 47°F and high 49°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 4.5 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 54840?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 15 and 55°F from May 26.

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).