What is the soil temperature in ZIP code 99147 today?

About 48°F on average in the top 4 inches (0–10 cm), low 46°F and high 53°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 12.5 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99147?

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 99147 · Washington · Nov 11, 2026

Soil temperature for ZIP code 99147

48°Faverage today, 0–4 in deep (modelled)
low 46°F · high 53°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 12.5 km from the ZIP centre point

On a week ago

6° warmer

42°F on Nov 4

5-day mean

46°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	42.0°F	39.0°F	46.6°F	analysis
Nov 5	42.3°F	40.8°F	46.1°F	analysis
Nov 6	41.1°F	38.8°F	44.5°F	analysis
Nov 7	44.0°F	41.7°F	48.2°F	analysis
Nov 8	46.9°F	45.8°F	49.7°F	analysis
Nov 9	45.1°F	43.1°F	48.3°F	analysis
Nov 10	45.4°F	44.0°F	46.7°F	analysis
Today	48.3°F	46.3°F	53.1°F	analysis
Nov 12	47.7°F	45.8°F	50.5°F	forecast
Nov 13	46.9°F	44.9°F	50.7°F	forecast
Nov 14	47.9°F	46.1°F	49.8°F	forecast
Nov 15	43.7°F	42.7°F	44.9°F	forecast
Nov 16	44.4°F	43.5°F	46.4°F	forecast
Nov 17	41.1°F	38.7°F	44.4°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 19
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

Nearby ZIP codes

Today's modelled average.

99185 48°F · 99117 48°F · 99122 48°F · 99129 48°F · 99140 48°F · 99040 47°F · 99103 48°F · 99116 48°F

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

Questions

What is the soil temperature in ZIP code 99147 today?: About 48°F on average in the top 4 inches (0–10 cm), low 46°F and high 53°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 12.5 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99147?: 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).