What is the soil temperature in ZIP code 81029 today?

About 56°F on average in the top 4 inches (0–10 cm), low 51°F and high 62°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 81029?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 9 and 55°F from Feb 28.

ZIP 81029 · Colorado · Nov 11, 2026

Soil temperature for ZIP code 81029

56°Faverage today, 0–4 in deep (modelled)
low 51°F · high 62°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

3° warmer

52°F on Nov 4

5-day mean

55°F

what the verdicts use

Held 55°F last spring

Feb 28

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	52.2°F	46.9°F	59.0°F	analysis
Nov 5	53.4°F	50.3°F	56.6°F	analysis
Nov 6	50.8°F	45.4°F	56.5°F	analysis
Nov 7	53.7°F	47.8°F	60.9°F	analysis
Nov 8	54.4°F	48.8°F	60.7°F	analysis
Nov 9	55.0°F	49.0°F	62.2°F	analysis
Nov 10	55.5°F	49.8°F	62.2°F	analysis
Today	55.6°F	50.6°F	61.6°F	analysis
Nov 12	55.5°F	50.1°F	61.9°F	forecast
Nov 13	54.3°F	49.4°F	59.2°F	forecast
Nov 14	52.4°F	49.4°F	55.3°F	forecast
Nov 15	50.1°F	47.5°F	52.8°F	forecast
Nov 16	47.5°F	44.9°F	51.7°F	forecast
Nov 17	49.2°F	45.4°F	54.5°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	Feb 2
50°F	Pre-emergent window opens	Feb 9
55°F	Crabgrass can germinate	Feb 28
60°F	Tomatoes	Mar 21
65°F	Warm-season grass seed	May 12

This ZIP code area covers about 570 square miles; the reading is for the model grid cell nearest its Census centre point, which can be far from where you are. Try a neighbouring ZIP if it looks off.

Nearby ZIP codes

Today's modelled average.

73946 55°F · 81087 54°F · 73933 55°F · 81090 55°F · 73947 55°F · 81073 53°F · 81064 53°F · 81084 54°F

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

Questions

What is the soil temperature in ZIP code 81029 today?: About 56°F on average in the top 4 inches (0–10 cm), low 51°F and high 62°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 81029?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 9 and 55°F from Feb 28.

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).