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California Wine Atlas

Yolo County

County

Heat class V · 1991-2020 normals

Climate normals in three numbers

4,114°F-days

, Apr 1 – Oct 31

204 GridMET cells cover this region

V

84mm

season rain, Apr 1 – Oct 31

26 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

7.0

pH, 1:1 water

22.0cm

, whole profile

155cm

to

Well drained

, dominant condition

Distribution across 204 · mean ◆, median │, p10–p90 bar

7.0
1.7%
33.0%
available water
22.0cm
depth to restriction
155cm

Dominant

  • 9.9%
  • 9.5%
  • 7.9%
  • 7.6%
  • 7.3%

204 map units · soil described over 92.7% of the region’s area · 6.7% is water, rock outcrop or other non-soil · 35% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Clay loam

22% sand · 45% silt · 33% clay

Sandier than 1% of California appellations and clayier than 95%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 4% 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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