ZIP 76621 · Hillsboro, TX · Nov 11, 2026

Soil temperature for ZIP code 76621

67°Faverage today, 0–4 in deep (modelled)
low 63°F · high 72°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 16.1 km from the ZIP centre point

On a week ago
2° cooler
69°F on Nov 4
5-day mean
66°F
what the verdicts use
Held 55°F last spring
Feb 8
crabgrass germination temperature

What the soil says today

  • Pre-emergentSeason over
  • Cool-season seedToo late in the season
  • Warm-season seedWarm enough
  • TomatoesSoil warm enough
  • 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.

40°50°60°70°80°50–55°F windowNov 4Nov 6Nov 8TodayNov 14Nov 1669°67°57°
View as table
DayAverageLowHigh
Nov 469.3°F65.4°F72.9°Fanalysis
Nov 567.9°F63.8°F72.6°Fanalysis
Nov 668.5°F65.1°F71.3°Fanalysis
Nov 767.7°F66.1°F69.2°Fanalysis
Nov 865.4°F63.8°F66.6°Fanalysis
Nov 963.1°F61.4°F64.6°Fanalysis
Nov 1064.1°F61.1°F67.9°Fanalysis
Today67.3°F63.4°F71.8°Fanalysis
Nov 1267.4°F64.0°F70.6°Fforecast
Nov 1366.2°F62.2°F70.4°Fforecast
Nov 1464.1°F61.7°F66.1°Fforecast
Nov 1560.9°F57.8°F64.2°Fforecast
Nov 1656.3°F54.1°F59.9°Fforecast
Nov 1756.9°F53.0°F61.2°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 lettuceFeb 2
50°FPre-emergent window opensFeb 6
55°FCrabgrass can germinateFeb 8
60°FTomatoesFeb 10
65°FWarm-season grass seedMar 1

Waco, TX, 37 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

76691 67°F · 76676 68°F · 76645 67°F · 76622 66°F · 76631 68°F · 76654 67°F · 76660 68°F · 76640 67°F

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

Questions

What is the soil temperature in ZIP code 76621 today?
About 67°F on average in the top 4 inches (0–10 cm), low 63°F and high 72°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 16.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 76621?
The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 6 and 55°F from Feb 8.

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).