What is the soil temperature in ZIP code 56742 today?

About 42°F on average in the top 4 inches (0–10 cm), low 41°F and high 45°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 9.7 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 56742?

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 27.

ZIP 56742 · Thief River Falls, MN · Nov 11, 2026

Soil temperature for ZIP code 56742

42°Faverage today, 0–4 in deep (modelled)
low 41°F · high 45°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.7 km from the ZIP centre point

On a week ago

4° cooler

47°F on Nov 4

5-day mean

43°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	46.8°F	45.8°F	47.4°F	analysis
Nov 5	42.3°F	40.9°F	43.8°F	analysis
Nov 6	37.3°F	35.7°F	38.6°F	analysis
Nov 7	39.7°F	36.1°F	45.2°F	analysis
Nov 8	43.9°F	41.8°F	45.5°F	analysis
Nov 9	45.2°F	42.8°F	48.8°F	analysis
Nov 10	43.3°F	40.4°F	45.8°F	analysis
Today	42.5°F	41.4°F	44.9°F	analysis
Nov 12	36.9°F	36.1°F	38.2°F	forecast
Nov 13	32.7°F	31.2°F	35.5°F	forecast
Nov 14	31.7°F	31.1°F	32.8°F	forecast
Nov 15	33.7°F	32.4°F	37.0°F	forecast
Nov 16	41.0°F	38.1°F	45.7°F	forecast
Nov 17	45.3°F	43.8°F	47.1°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 22
50°F	Pre-emergent window opens	May 25
55°F	Crabgrass can germinate	May 27
60°F	Tomatoes	May 29
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

56684 43°F · 56748 43°F · 56715 44°F · 56646 43°F · 56725 41°F · 56754 43°F · 56644 42°F · 56556 44°F

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

Questions

What is the soil temperature in ZIP code 56742 today?: About 42°F on average in the top 4 inches (0–10 cm), low 41°F and high 45°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 9.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 56742?: 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 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).