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California Wine Atlas

San Bernardino County

County

Heat class V · 1991-2020 normals

Climate normals in three numbers

5,496°F-days

, Apr 1 – Oct 31

3099 GridMET cells cover this region

V

48mm

season rain, Apr 1 – Oct 31

16 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

7.9

pH, 1:1 water

7.8cm

, whole profile

147cm

to

Somewhat excessively drained

, dominant condition

Distribution across 984 · mean ◆, median │, p10–p90 bar

7.9
0.3%
8.2%
available water
7.8cm
depth to restriction
147cm

Dominant

  • 23.8%
  • 11.4%
  • 10.4%
  • 7.0%
  • 3.7%

984 map units · soil described over 98.4% of the region’s area · 5.4% is water, rock outcrop or other non-soil · 34% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Sandy loam

74% sand · 18% silt · 8% clay

Sandier than 99% of California appellations and clayier than 1%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 29% 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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