ZIP 80478 · Colorado · Nov 11, 2026

Soil temperature for ZIP code 80478

35°Faverage today, 0–4 in deep (modelled)
low 33°F · high 38°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.4 km from the ZIP centre point

On a week ago
No change
35°F on Nov 4
5-day mean
35°F
what the verdicts use
Held 55°F last spring
–
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.

20°30°40°50°60°50–55°F windowNov 4Nov 6Nov 8TodayNov 14Nov 1635°35°34°
View as table
DayAverageLowHigh
Nov 434.6°F34.0°F35.7°Fanalysis
Nov 533.6°F32.5°F34.8°Fanalysis
Nov 634.2°F33.6°F34.8°Fanalysis
Nov 733.2°F31.8°F34.3°Fanalysis
Nov 833.5°F32.4°F35.5°Fanalysis
Nov 936.8°F35.5°F38.9°Fanalysis
Nov 1038.0°F36.9°F39.7°Fanalysis
Today35.1°F32.8°F37.7°Fanalysis
Nov 1234.1°F33.0°F36.5°Fforecast
Nov 1334.8°F33.8°F36.8°Fforecast
Nov 1434.5°F33.7°F35.4°Fforecast
Nov 1533.2°F32.3°F34.2°Fforecast
Nov 1632.7°F31.4°F35.3°Fforecast
Nov 1733.7°F32.5°F35.7°Fforecast
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.

SoilWhat it meansHeld from (spring 2026)
40°FPeas and lettuceMay 24
50°FPre-emergent window opensJun 6
55°FCrabgrass can germinatenot reached
60°FTomatoesnot reached
65°FWarm-season grass seednot reached

Boulder, CO, 50 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

80442 37°F · 80482 35°F · 80451 37°F · 80446 36°F · 80468 37°F · 80481 39°F · 80474 39°F · 80466 39°F

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

Questions

What is the soil temperature in ZIP code 80478 today?
About 35°F on average in the top 4 inches (0–10 cm), low 33°F and high 38°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 9.4 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 80478?
The spring window is closed. It opens again when the soil holds 50°F.

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).