What is the soil temperature in ZIP code 97820 today?

About 46°F on average in the top 4 inches (0–10 cm), low 43°F and high 50°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 12.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 97820?

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 15.

ZIP 97820 · Oregon · Nov 11, 2026

Soil temperature for ZIP code 97820

46°Faverage today, 0–4 in deep (modelled)
low 43°F · high 50°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 12.6 km from the ZIP centre point

On a week ago

6° warmer

40°F on Nov 4

5-day mean

44°F

what the verdicts use

Held 55°F last spring

Jun 15

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	39.9°F	37.0°F	43.8°F	analysis
Nov 5	41.6°F	40.0°F	44.3°F	analysis
Nov 6	40.0°F	37.3°F	44.5°F	analysis
Nov 7	43.0°F	40.6°F	47.7°F	analysis
Nov 8	44.7°F	43.4°F	45.6°F	analysis
Nov 9	42.5°F	40.6°F	45.4°F	analysis
Nov 10	44.6°F	43.1°F	47.5°F	analysis
Today	45.6°F	43.2°F	50.4°F	analysis
Nov 12	46.3°F	44.0°F	49.8°F	forecast
Nov 13	45.4°F	44.0°F	46.9°F	forecast
Nov 14	41.1°F	39.0°F	44.4°F	forecast
Nov 15	38.4°F	37.4°F	39.6°F	forecast
Nov 16	39.6°F	39.2°F	40.0°F	forecast
Nov 17	38.0°F	37.4°F	39.0°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	Mar 17
50°F	Pre-emergent window opens	May 3
55°F	Crabgrass can germinate	Jun 15
60°F	Tomatoes	Jun 17
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

97873 46°F · 97865 47°F · 97825 49°F · 97845 46°F · 97751 46°F · 97869 46°F · 97720 46°F · 97856 48°F

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

Questions

What is the soil temperature in ZIP code 97820 today?: About 46°F on average in the top 4 inches (0–10 cm), low 43°F and high 50°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 12.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 97820?: 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 15.

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).