What is the soil temperature in ZIP code 78339 today?

About 68°F on average in the top 4 inches (0–10 cm), low 66°F and high 71°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 7.2 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 78339?

Soil here stayed above 50°F all last winter, so the 50 to 55°F soil rule gives no spring window. Time pre-emergent to your local calendar.

ZIP 78339 · Robstown, TX · Nov 11, 2026

Soil temperature for ZIP code 78339

68°Faverage today, 0–4 in deep (modelled)
low 66°F · high 71°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 7.2 km from the ZIP centre point

On a week ago

9° cooler

77°F on Nov 4

5-day mean

70°F

what the verdicts use

Held 55°F last spring

Feb 1

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.

View as table

Day	Average	Low	High
Nov 4	77.2°F	72.6°F	81.4°F	analysis
Nov 5	74.4°F	70.8°F	77.8°F	analysis
Nov 6	77.3°F	74.2°F	81.2°F	analysis
Nov 7	75.9°F	72.4°F	78.2°F	analysis
Nov 8	74.0°F	73.1°F	75.3°F	analysis
Nov 9	68.6°F	67.8°F	70.8°F	analysis
Nov 10	65.8°F	65.1°F	66.4°F	analysis
Today	67.8°F	65.8°F	71.0°F	analysis
Nov 12	69.8°F	67.0°F	73.4°F	forecast
Nov 13	69.0°F	64.5°F	73.1°F	forecast
Nov 14	68.3°F	65.9°F	69.8°F	forecast
Nov 15	69.3°F	67.0°F	72.4°F	forecast
Nov 16	66.1°F	64.4°F	69.0°F	forecast
Nov 17	61.5°F	60.7°F	63.2°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	never below
50°F	Pre-emergent window opens	never below
55°F	Crabgrass can germinate	Feb 1
60°F	Tomatoes	Feb 5
65°F	Warm-season grass seed	Feb 8

Alice, TX, 27 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

78380 68°F · 78330 68°F · 78351 68°F · 78343 68°F · 78410 68°F · 78352 67°F · 78370 68°F · 78406 68°F

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

Questions

What is the soil temperature in ZIP code 78339 today?: About 68°F on average in the top 4 inches (0–10 cm), low 66°F and high 71°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 7.2 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 78339?: Soil here stayed above 50°F all last winter, so the 50 to 55°F soil rule gives no spring window. Time pre-emergent to your local calendar.

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).