What is the soil temperature in ZIP code 99321 today?

About 49°F on average in the top 4 inches (0–10 cm), low 46°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 14.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99321?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 6 and 55°F from Apr 21.

ZIP 99321 · Washington · Nov 11, 2026

Soil temperature for ZIP code 99321

49°Faverage today, 0–4 in deep (modelled)
low 46°F · high 54°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 14.6 km from the ZIP centre point

On a week ago

3° warmer

46°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

Apr 21

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	45.7°F	41.8°F	51.0°F	analysis
Nov 5	48.8°F	46.0°F	55.4°F	analysis
Nov 6	47.2°F	43.7°F	52.3°F	analysis
Nov 7	50.0°F	47.6°F	53.5°F	analysis
Nov 8	49.6°F	47.2°F	53.4°F	analysis
Nov 9	48.5°F	46.3°F	51.6°F	analysis
Nov 10	48.1°F	45.6°F	51.1°F	analysis
Today	48.9°F	45.9°F	53.7°F	analysis
Nov 12	48.7°F	45.8°F	53.2°F	forecast
Nov 13	47.9°F	45.8°F	51.2°F	forecast
Nov 14	47.9°F	44.7°F	52.8°F	forecast
Nov 15	46.6°F	44.2°F	49.9°F	forecast
Nov 16	47.0°F	44.7°F	51.0°F	forecast
Nov 17	45.0°F	42.0°F	48.9°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	Feb 28
50°F	Pre-emergent window opens	Apr 6
55°F	Crabgrass can germinate	Apr 21
60°F	Tomatoes	May 2
65°F	Warm-season grass seed	May 4

Ellensburg, WA, 52 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

98950 49°F · 99357 48°F · 99349 49°F · 98824 48°F · 98848 47°F · 98926 45°F · 98901 46°F · 98934 46°F

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

Questions

What is the soil temperature in ZIP code 99321 today?: About 49°F on average in the top 4 inches (0–10 cm), low 46°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 14.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99321?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 6 and 55°F from Apr 21.

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).