What is the soil temperature in ZIP code 55040 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 4.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 55040?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 12 and 55°F from May 25.

ZIP 55040 · Isanti, MN · Nov 11, 2026

Soil temperature for ZIP code 55040

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 4.1 km from the ZIP centre point

On a week ago

6° cooler

54°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

May 25

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	53.6°F	53.0°F	53.9°F	analysis
Nov 5	47.8°F	44.6°F	51.4°F	analysis
Nov 6	40.5°F	38.1°F	43.8°F	analysis
Nov 7	41.8°F	37.3°F	47.2°F	analysis
Nov 8	46.5°F	43.8°F	49.2°F	analysis
Nov 9	46.6°F	42.3°F	51.7°F	analysis
Nov 10	47.5°F	43.1°F	51.2°F	analysis
Today	48.1°F	46.8°F	49.0°F	analysis
Nov 12	40.0°F	38.2°F	43.3°F	forecast
Nov 13	37.3°F	36.4°F	38.2°F	forecast
Nov 14	35.7°F	35.1°F	36.4°F	forecast
Nov 15	35.7°F	35.0°F	37.5°F	forecast
Nov 16	39.6°F	35.3°F	44.9°F	forecast
Nov 17	43.5°F	40.4°F	46.9°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	Mar 23
50°F	Pre-emergent window opens	May 12
55°F	Crabgrass can germinate	May 25
60°F	Tomatoes	May 27
65°F	Warm-season grass seed	May 29

Andover, MN, 26 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

55070 48°F · 55005 48°F · 55008 48°F · 55011 48°F · 55029 48°F · 55079 48°F · 55092 48°F · 55080 48°F

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

Questions

What is the soil temperature in ZIP code 55040 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 4.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 55040?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 12 and 55°F from May 25.

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).