What is the soil temperature in ZIP code 78645 today?

About 66°F on average in the top 4 inches (0–10 cm), low 64°F and high 70°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 6.2 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 78645?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 5 and 55°F from Feb 7.

ZIP 78645 · Lago Vista, TX · Nov 11, 2026

Soil temperature for ZIP code 78645

66°Faverage today, 0–4 in deep (modelled)
low 64°F · high 70°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 6.2 km from the ZIP centre point

On a week ago

3° cooler

70°F on Nov 4

5-day mean

64°F

what the verdicts use

Held 55°F last spring

Feb 7

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
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	69.6°F	65.8°F	73.4°F	analysis
Nov 5	68.5°F	64.9°F	72.9°F	analysis
Nov 6	67.9°F	66.1°F	70.8°F	analysis
Nov 7	64.9°F	63.1°F	66.8°F	analysis
Nov 8	63.9°F	63.1°F	65.8°F	analysis
Nov 9	62.4°F	61.4°F	63.2°F	analysis
Nov 10	63.9°F	61.5°F	67.4°F	analysis
Today	66.2°F	63.6°F	69.6°F	analysis
Nov 12	66.2°F	63.8°F	68.7°F	forecast
Nov 13	64.7°F	61.1°F	68.6°F	forecast
Nov 14	62.7°F	60.9°F	64.9°F	forecast
Nov 15	60.1°F	58.8°F	62.0°F	forecast
Nov 16	56.1°F	55.0°F	57.1°F	forecast
Nov 17	55.1°F	52.1°F	58.9°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	Jan 31
50°F	Pre-emergent window opens	Feb 5
55°F	Crabgrass can germinate	Feb 7
60°F	Tomatoes	Feb 10
65°F	Warm-season grass seed	Mar 1

Round Rock, TX, 29 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

78734 66°F · 78732 66°F · 78726 67°F · 78641 66°F · 78669 66°F · 78730 68°F · 78613 67°F · 78738 66°F

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

Questions

What is the soil temperature in ZIP code 78645 today?: About 66°F on average in the top 4 inches (0–10 cm), low 64°F and high 70°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 6.2 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 78645?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Feb 5 and 55°F from Feb 7.

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).