What is the soil temperature in ZIP code 99114 today?

About 45°F on average in the top 4 inches (0–10 cm), low 43°F and high 48°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 10.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99114?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 3 and 55°F from Jun 16.

ZIP 99114 · Washington · Nov 11, 2026

Soil temperature for ZIP code 99114

45°Faverage today, 0–4 in deep (modelled)
low 43°F · high 48°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.6 km from the ZIP centre point

On a week ago

7° warmer

38°F on Nov 4

5-day mean

43°F

what the verdicts use

Held 55°F last spring

Jun 16

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	38.3°F	36.2°F	41.7°F	analysis
Nov 5	38.6°F	38.1°F	39.2°F	analysis
Nov 6	38.2°F	37.2°F	40.3°F	analysis
Nov 7	42.0°F	40.0°F	45.9°F	analysis
Nov 8	43.9°F	43.1°F	44.9°F	analysis
Nov 9	40.4°F	38.6°F	42.7°F	analysis
Nov 10	42.4°F	41.8°F	43.5°F	analysis
Today	45.0°F	43.4°F	47.9°F	analysis
Nov 12	44.8°F	43.1°F	46.8°F	forecast
Nov 13	44.2°F	42.4°F	47.2°F	forecast
Nov 14	43.4°F	42.5°F	44.7°F	forecast
Nov 15	41.5°F	41.1°F	42.0°F	forecast
Nov 16	41.4°F	41.1°F	42.3°F	forecast
Nov 17	39.8°F	38.5°F	41.0°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	Apr 6
50°F	Pre-emergent window opens	May 3
55°F	Crabgrass can germinate	Jun 16
60°F	Tomatoes	Jun 18
65°F	Warm-season grass seed	not reached

This ZIP code area covers about 719 square miles; the reading is for the model grid cell nearest its Census centre point, which can be far from where you are. Try a neighbouring ZIP if it looks off.

Nearby ZIP codes

Today's modelled average.

99126 47°F · 99151 47°F · 99157 45°F · 99152 44°F · 99141 43°F · 99119 45°F · 99139 43°F · 99167 44°F

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

Questions

What is the soil temperature in ZIP code 99114 today?: About 45°F on average in the top 4 inches (0–10 cm), low 43°F and high 48°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 10.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99114?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 3 and 55°F from Jun 16.

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).