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California Wine Atlas

Santa Clara County

County

Heat class III · 1991-2020 normals

Climate normals in three numbers

3,267°F-days

, Apr 1 – Oct 31

245 GridMET cells cover this region

III

96mm

season rain, Apr 1 – Oct 31

32 mm of it in the , Sep 1 – Oct 31

Warm and cool vintages since 1980

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Rain across the season, and at harvest

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The boundary

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Hovering a shaded region names it; a click opens its page.

Measured vineyard area

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Drought categories, year by year

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What's in the ground

6.5

pH, 1:1 water

14.4cm

, whole profile

103cm

to

Well drained

, dominant condition

Distribution across 426 · mean ◆, median │, p10–p90 bar

6.5
4.0%
22.7%
available water
14.4cm
depth to restriction
103cm

Dominant

  • 25.0%
  • 10.2%
  • 8.9%
  • 4.1%
  • 2.7%

426 map units · soil described over 97.9% of the region’s area · 18.2% is water, rock outcrop or other non-soil · 68% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Loam

41% sand · 36% silt · 23% clay

Sandier than 47% of California appellations and clayier than 52%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 12% rock fragments by volume, which the triangle does not describe — the three fractions are of the fine-earth material only.

Elevation, slope and aspect

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Bearing acreage by variety

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Price per ton

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