ZIP 95017 · Ben Lomond, CA · Nov 11, 2026

Soil temperature for ZIP code 95017

61°Faverage today, 0–4 in deep (modelled)
low 58°F · high 65°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 17.3 km from the ZIP centre point

On a week ago
5° warmer
56°F on Nov 4
5-day mean
60°F
what the verdicts use
Held 55°F last spring
Mar 11
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.

40°50°60°70°50–55°F windowNov 4Nov 6Nov 8TodayNov 14Nov 1656°61°53°
View as table
DayAverageLowHigh
Nov 456.2°F54.2°F60.3°Fanalysis
Nov 557.6°F55.0°F62.2°Fanalysis
Nov 657.9°F55.0°F62.6°Fanalysis
Nov 758.4°F55.9°F62.0°Fanalysis
Nov 859.5°F57.1°F64.1°Fanalysis
Nov 960.4°F57.8°F64.4°Fanalysis
Nov 1061.0°F58.4°F65.8°Fanalysis
Today61.0°F58.4°F64.9°Fanalysis
Nov 1259.8°F57.7°F62.0°Fforecast
Nov 1358.4°F57.0°F59.7°Fforecast
Nov 1453.6°F51.8°F56.3°Fforecast
Nov 1553.6°F51.9°F56.3°Fforecast
Nov 1654.6°F53.3°F55.7°Fforecast
Nov 1753.3°F52.1°F55.4°Fforecast
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.

SoilWhat it meansHeld from (spring 2026)
40°FPeas and lettucenever below
50°FPre-emergent window opensJan 15
55°FCrabgrass can germinateMar 11
60°FTomatoesMar 17
65°FWarm-season grass seednot reached

Santa Cruz, CA, 23 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

95007 65°F · 95006 61°F · 95005 65°F · 95018 65°F · 95041 65°F · 95060 65°F · 94060 61°F · 94021 61°F

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

Questions

What is the soil temperature in ZIP code 95017 today?
About 61°F on average in the top 4 inches (0–10 cm), low 58°F and high 65°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 17.3 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 95017?
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 11.

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).