What is the soil temperature in ZIP code 49639 today?

About 46°F on average in the top 4 inches (0–10 cm), low 45°F and high 47°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 13 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 49639?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 17 and 55°F from May 27.

ZIP 49639 · Big Rapids, MI · Nov 11, 2026

Soil temperature for ZIP code 49639

46°Faverage today, 0–4 in deep (modelled)
low 45°F · high 47°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 13 km from the ZIP centre point

On a week ago

17° cooler

63°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

May 27

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	62.7°F	60.5°F	63.6°F	analysis
Nov 5	52.8°F	50.2°F	56.1°F	analysis
Nov 6	44.5°F	43.2°F	47.0°F	analysis
Nov 7	43.3°F	40.4°F	45.3°F	analysis
Nov 8	45.2°F	41.1°F	50.1°F	analysis
Nov 9	46.9°F	43.6°F	48.7°F	analysis
Nov 10	48.6°F	45.2°F	51.6°F	analysis
Today	46.1°F	44.7°F	47.0°F	analysis
Nov 12	42.1°F	39.8°F	44.9°F	forecast
Nov 13	37.0°F	36.3°F	38.4°F	forecast
Nov 14	37.2°F	35.4°F	39.5°F	forecast
Nov 15	39.6°F	38.4°F	41.0°F	forecast
Nov 16	37.4°F	36.1°F	38.9°F	forecast
Nov 17	38.2°F	36.1°F	41.9°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 17
55°F	Crabgrass can germinate	May 27
60°F	Tomatoes	Jun 6
65°F	Warm-season grass seed	not reached

Mount Pleasant, MI, 58 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

49677 46°F · 49320 46°F · 49631 46°F · 49307 46°F · 49338 46°F · 49342 46°F · 49655 46°F · 49679 46°F

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

Questions

What is the soil temperature in ZIP code 49639 today?: About 46°F on average in the top 4 inches (0–10 cm), low 45°F and high 47°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 13 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 49639?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 17 and 55°F from May 27.

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).