San Mateo County
County
Heat class I · 1991-2020 normals
Climate normals in three numbers
, Apr 1 – Oct 31
97 GridMET cells cover this region
raw 4 km GridMET would say II
season rain, Apr 1 – Oct 31
39 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
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
6.2
pH, 1:1 water
14.3cm
, whole profile
102cm
to
Well drained
, dominant condition
Distribution across 318 · mean ◆, median │, p10–p90 bar
Dominant
- 17.2%
- 6.6%
- 6.4%
- 6.2%
- 6.0%
318 map units · soil described over 74.0% of the region’s area · 17.4% is water, rock outcrop or other non-soil · 84% of the described area has a restrictive layer within the profile.
Sand, silt and clay, against every other appellation
Loam
44% sand · 33% silt · 23% clay
Sandier than 61% of California appellations and clayier than 51%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.
Plus 14% 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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