What is the soil temperature in ZIP code 80440 today?

About 35°F on average in the top 4 inches (0–10 cm), low 33°F and high 37°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 13.9 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 80440?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 2 and 55°F from Jun 17.

ZIP 80440 · Colorado · Nov 11, 2026

Soil temperature for ZIP code 80440

35°Faverage today, 0–4 in deep (modelled)
low 33°F · high 37°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 13.9 km from the ZIP centre point

On a week ago

No change

34°F on Nov 4

5-day mean

34°F

what the verdicts use

Held 55°F last spring

Jun 17

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 lettuceToo cold

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	34.3°F	32.5°F	35.7°F	analysis
Nov 5	35.0°F	34.3°F	35.7°F	analysis
Nov 6	33.0°F	32.3°F	34.3°F	analysis
Nov 7	32.7°F	31.8°F	33.6°F	analysis
Nov 8	33.2°F	31.8°F	35.6°F	analysis
Nov 9	35.8°F	33.2°F	39.4°F	analysis
Nov 10	35.3°F	33.4°F	37.1°F	analysis
Today	34.8°F	33.0°F	36.8°F	analysis
Nov 12	35.6°F	33.4°F	39.6°F	forecast
Nov 13	35.7°F	33.6°F	37.7°F	forecast
Nov 14	34.1°F	32.7°F	35.2°F	forecast
Nov 15	34.2°F	32.9°F	36.1°F	forecast
Nov 16	33.8°F	31.5°F	36.0°F	forecast
Nov 17	34.4°F	32.0°F	37.7°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 24
50°F	Pre-emergent window opens	Jun 2
55°F	Crabgrass can germinate	Jun 17
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

80432 37°F · 80420 35°F · 81228 36°F · 80461 30°F · 80449 38°F · 81251 31°F · 81211 27°F · 80456 37°F

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

Questions

What is the soil temperature in ZIP code 80440 today?: About 35°F on average in the top 4 inches (0–10 cm), low 33°F and high 37°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 13.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 80440?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 2 and 55°F from Jun 17.

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).