What is the soil temperature in ZIP code 91905 today?

About 64°F on average in the top 4 inches (0–10 cm), low 58°F and high 73°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 9.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 91905?

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 Feb 2.

ZIP 91905 · California · Nov 11, 2026

Soil temperature for ZIP code 91905

64°Faverage today, 0–4 in deep (modelled)
low 58°F · high 73°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.6 km from the ZIP centre point

On a week ago

1° warmer

63°F on Nov 4

5-day mean

64°F

what the verdicts use

Held 55°F last spring

Feb 2

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
TomatoesSoil warm enough
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	63.0°F	56.6°F	72.5°F	analysis
Nov 5	62.4°F	56.2°F	70.5°F	analysis
Nov 6	61.5°F	55.3°F	69.4°F	analysis
Nov 7	62.5°F	56.8°F	70.8°F	analysis
Nov 8	63.8°F	57.3°F	72.6°F	analysis
Nov 9	64.6°F	58.4°F	73.3°F	analysis
Nov 10	64.2°F	57.7°F	73.1°F	analysis
Today	64.0°F	57.5°F	72.8°F	analysis
Nov 12	63.8°F	57.3°F	72.4°F	forecast
Nov 13	63.9°F	59.1°F	70.1°F	forecast
Nov 14	60.1°F	56.8°F	64.8°F	forecast
Nov 15	60.3°F	54.4°F	68.8°F	forecast
Nov 16	61.1°F	55.9°F	67.5°F	forecast
Nov 17	59.9°F	56.2°F	62.6°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	Feb 2
60°F	Tomatoes	Feb 26
65°F	Warm-season grass seed	Mar 13

Lakeside, CA, 61 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

91934 64°F · 91906 61°F · 91948 61°F · 91963 61°F · 91962 61°F · 91931 61°F · 91980 71°F · 92259 75°F

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

Questions

What is the soil temperature in ZIP code 91905 today?: About 64°F on average in the top 4 inches (0–10 cm), low 58°F and high 73°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 9.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 91905?: 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 Feb 2.

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).