What is the soil temperature in ZIP code 95446 today?

About 61°F on average in the top 4 inches (0–10 cm), low 58°F and high 64°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 2.4 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 95446?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jan 15 and 55°F from Mar 10.

ZIP 95446 · Healdsburg, CA · Nov 11, 2026

Soil temperature for ZIP code 95446

61°Faverage today, 0–4 in deep (modelled)
low 58°F · high 64°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 2.4 km from the ZIP centre point

On a week ago

6° warmer

54°F on Nov 4

5-day mean

60°F

what the verdicts use

Held 55°F last spring

Mar 10

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	54.1°F	52.3°F	58.0°F	analysis
Nov 5	55.7°F	53.2°F	60.4°F	analysis
Nov 6	57.7°F	55.2°F	62.7°F	analysis
Nov 7	58.9°F	56.8°F	62.4°F	analysis
Nov 8	58.6°F	56.2°F	62.7°F	analysis
Nov 9	60.2°F	58.2°F	64.0°F	analysis
Nov 10	61.3°F	58.9°F	65.3°F	analysis
Today	60.6°F	58.2°F	64.0°F	analysis
Nov 12	58.8°F	56.6°F	60.7°F	forecast
Nov 13	58.1°F	56.3°F	59.7°F	forecast
Nov 14	53.2°F	51.6°F	55.8°F	forecast
Nov 15	52.9°F	52.1°F	53.7°F	forecast
Nov 16	52.9°F	51.7°F	54.0°F	forecast
Nov 17	53.3°F	51.3°F	56.4°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	never below
50°F	Pre-emergent window opens	Jan 15
55°F	Crabgrass can germinate	Mar 10
60°F	Tomatoes	Mar 18
65°F	Warm-season grass seed	not reached

Santa Rosa, CA, 27 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

95471 61°F · 95486 61°F · 95462 61°F · 95430 61°F · 95436 61°F · 95419 61°F · 95465 61°F · 95448 61°F

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

Questions

What is the soil temperature in ZIP code 95446 today?: About 61°F on average in the top 4 inches (0–10 cm), low 58°F and high 64°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 2.4 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 95446?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jan 15 and 55°F from Mar 10.

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).