What is the soil temperature in ZIP code 54521 today?

About 43°F on average in the top 4 inches (0–10 cm), low 42°F and high 43°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 9.3 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 54521?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 25 and 55°F from May 26.

ZIP 54521 · Rhinelander, WI · Nov 11, 2026

Soil temperature for ZIP code 54521

43°Faverage today, 0–4 in deep (modelled)
low 42°F · high 43°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.3 km from the ZIP centre point

On a week ago

14° cooler

57°F on Nov 4

5-day mean

42°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	56.9°F	54.7°F	57.9°F	analysis
Nov 5	46.0°F	40.3°F	51.4°F	analysis
Nov 6	38.1°F	36.6°F	39.4°F	analysis
Nov 7	38.1°F	36.4°F	41.0°F	analysis
Nov 8	42.4°F	40.0°F	44.7°F	analysis
Nov 9	41.9°F	38.6°F	45.5°F	analysis
Nov 10	44.4°F	40.8°F	47.1°F	analysis
Today	42.7°F	41.6°F	43.4°F	analysis
Nov 12	37.0°F	36.2°F	38.2°F	forecast
Nov 13	35.3°F	34.5°F	36.1°F	forecast
Nov 14	33.8°F	33.8°F	33.8°F	forecast
Nov 15	34.6°F	33.7°F	36.7°F	forecast
Nov 16	36.2°F	35.8°F	36.6°F	forecast
Nov 17	37.4°F	34.7°F	41.4°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	Apr 14
50°F	Pre-emergent window opens	May 25
55°F	Crabgrass can germinate	May 26
60°F	Tomatoes	Jun 4
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

54519 43°F · 54562 43°F · 54558 43°F · 54561 43°F · 54554 42°F · 54560 43°F · 54539 44°F · 54540 42°F

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

Questions

What is the soil temperature in ZIP code 54521 today?: About 43°F on average in the top 4 inches (0–10 cm), low 42°F and high 43°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 9.3 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 54521?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 25 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).