What is the soil temperature in ZIP code 99134 today?

About 49°F on average in the top 4 inches (0–10 cm), low 47°F and high 54°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 6.5 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99134?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 30 and 55°F from May 3.

ZIP 99134 · Washington · Nov 11, 2026

Soil temperature for ZIP code 99134

49°Faverage today, 0–4 in deep (modelled)
low 47°F · high 54°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 6.5 km from the ZIP centre point

On a week ago

6° warmer

43°F on Nov 4

5-day mean

47°F

what the verdicts use

Held 55°F last spring

May 3

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 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	43.0°F	40.0°F	47.8°F	analysis
Nov 5	43.0°F	40.8°F	48.0°F	analysis
Nov 6	42.0°F	39.5°F	45.8°F	analysis
Nov 7	46.0°F	43.1°F	51.1°F	analysis
Nov 8	48.5°F	47.4°F	51.0°F	analysis
Nov 9	46.2°F	43.6°F	50.2°F	analysis
Nov 10	46.8°F	45.1°F	48.2°F	analysis
Today	49.4°F	46.8°F	54.4°F	analysis
Nov 12	49.3°F	47.4°F	52.4°F	forecast
Nov 13	48.7°F	46.2°F	53.3°F	forecast
Nov 14	49.4°F	47.5°F	50.9°F	forecast
Nov 15	44.7°F	43.1°F	45.9°F	forecast
Nov 16	45.8°F	44.5°F	47.4°F	forecast
Nov 17	42.1°F	39.5°F	45.7°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 3
50°F	Pre-emergent window opens	Apr 30
55°F	Crabgrass can germinate	May 3
60°F	Tomatoes	Jun 15
65°F	Warm-season grass seed	Jun 17

Spokane, WA, 69 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

99154 49°F · 99144 51°F · 99032 51°F · 99122 48°F · 99008 49°F · 99117 48°F · 99169 51°F · 99159 50°F

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

Questions

What is the soil temperature in ZIP code 99134 today?: About 49°F on average in the top 4 inches (0–10 cm), low 47°F and high 54°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 6.5 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99134?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 30 and 55°F from May 3.

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).