What is the soil temperature in ZIP code 93221 today?

About 62°F on average in the top 4 inches (0–10 cm), low 59°F and high 69°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 5.8 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 93221?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jan 16 and 55°F from Mar 10.

ZIP 93221 · Exeter, CA · Nov 11, 2026

Soil temperature for ZIP code 93221

62°Faverage today, 0–4 in deep (modelled)
low 59°F · high 69°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 5.8 km from the ZIP centre point

On a week ago

1° warmer

61°F on Nov 4

5-day mean

62°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
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	61.1°F	58.2°F	65.1°F	analysis
Nov 5	59.5°F	56.1°F	65.0°F	analysis
Nov 6	60.0°F	56.4°F	65.7°F	analysis
Nov 7	61.3°F	57.3°F	68.0°F	analysis
Nov 8	62.7°F	59.1°F	68.2°F	analysis
Nov 9	62.0°F	58.4°F	67.5°F	analysis
Nov 10	62.1°F	58.8°F	67.6°F	analysis
Today	62.5°F	58.7°F	68.9°F	analysis
Nov 12	64.1°F	60.5°F	69.5°F	forecast
Nov 13	63.5°F	60.8°F	67.2°F	forecast
Nov 14	62.0°F	60.0°F	64.0°F	forecast
Nov 15	58.1°F	54.9°F	62.7°F	forecast
Nov 16	59.1°F	56.2°F	63.9°F	forecast
Nov 17	57.6°F	56.1°F	60.8°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 16
55°F	Crabgrass can germinate	Mar 10
60°F	Tomatoes	Mar 15
65°F	Warm-season grass seed	Mar 19

Visalia, CA, 24 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

93244 63°F · 93247 62°F · 93223 62°F · 93267 62°F · 93292 62°F · 93286 63°F · 93235 62°F · 93271 63°F

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

Questions

What is the soil temperature in ZIP code 93221 today?: About 62°F on average in the top 4 inches (0–10 cm), low 59°F and high 69°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 5.8 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 93221?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jan 16 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).