Temecula Valley
AVA · Riverside County · District 16
27 CFR 9.50 · established 1984-10-23 · last amended 2004-04-19
Heat class V · 1991-2020 normals
Climate normals in three numbers
, Apr 1 – Oct 31
35 GridMET cells cover this region
season rain, Apr 1 – Oct 31
21 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
Riverside County — not Temecula Valley
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What's in the ground
6.6
pH, 1:1 water
10.9cm
, whole profile
94cm
to
Well drained
, dominant condition
Distribution across 194 · mean ◆, median │, p10–p90 bar
Dominant
- 14.6%
- 12.7%
- 11.2%
- 9.5%
- 8.2%
194 map units · soil described over 87.6% of the region’s area · 15.8% is water, rock outcrop or other non-soil · 69% of the described area has a restrictive layer within the profile.
Sand, silt and clay, against every other appellation
Sandy loam
57% sand · 25% silt · 17% clay
Sandier than 84% of California appellations and clayier than 16%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.
Plus 9% 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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Producers
A curated roster, not a census — only source-verified entries appear, 2772 published across the atlas.
Bearing acreage by variety
Riverside County · District 16
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Price per ton
Riverside County · District 16
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The appellation in federal law
The boundary, in the government’s own words (681 words)
(c) Boundary. The Temecula Valley viticultural area is located in Riverside County, California. The boundary is as follows: (1) The beginning point is the northernmost point of the Santa Rosa Land Grant where the Santa Rosa Land Grant boundary intersects the easternmost point of the Cleveland National Forest boundary. (2) The boundary follows the Cleveland National Forest boundary southwesterly to the point where it converges with the Riverside County-San Diego County line. (3) The boundary follows the Riverside County-San Diego County line southwesterly, then southeasterly to the point where the Riverside County-San Diego County line diverges southward and the Santa Rosa Land Grant boundary continues southeasterly. (4) The boundary follows the Santa Rosa Land Grant boundary southeasterly, then northeasterly, to its intersection with the Temecula Land Grant boundary. (5) The boundary follows the Temecula Land Grant boundary southeasterly, then northeasterly, to its intersection with the Little Temecula Land Grant boundary. (6) The boundary follows the Little Temecula Land Grant boundary southeasterly to its intersection with the boundary of that portion of the Pechanga Indian Reservation which, until 1907, was Lot “E” of the Little Temecula Land Grant. (7) The boundary follows the Pechanga Indian Reservation boundary southeasterly, then northeasterly (including that portion of the Penchanga Indian Reservation in the approved viticultural area) to the point at which it rejoins the Little Temecula Land Grant boundary. (8) The boundary follows the Little Temecula Land Grant boundary northeasterly to its intersection with the Pauba Land Grant boundary. (9) The boundary follows the Pauba Land Grant boundary southeasterly, then northeasterly, to the north-south section line dividing Section 23 from Section 24 in Township 8 South, Range 2 West. (10) The boundary follows this section line south to the 1500-foot contour line. (11) The boundary follows the 1500-foot contour line easterly to the range line dividing Range 2 West from Range 1 West. (12) The boundary follows this range line north, across California State Highway 71/79, to the 1400-foot contour line of Oak Mountain. (13) The boundary follows the 1400-foot contour line around Oak Mountain to its intersection with the 117°00′ West longitude meridian. (14) The boundary follows the 117°00′ West longitude meridian north to its intersection with the Pauba Land Grant boundary. (15) The boundary follows the Pauba Land Grant boundary northwesterly, then west, then south, then west, to Warren Road (which coincides with the range line dividing Range 1 West from Range 2 West). (16) The boundary follows Warren Road north to an unnamed east-west, light-duty, hard or improved surface road (which coincides with the section line dividing Section 12 from Section 13 in Township 7 South, Range 2 West). (17) The boundary follows this road west to the north-south section line dividing Section 13 from Section 14 in Township 7 South, Range 2 West. (18) The boundary follows this section line south to its intersection with Buck Road (which coincides with the east-west section line on the southern edge of Section 14 in Township 7 South, Range 2 West). (19) The boundary follows Buck Road west to the point where it diverges northwesterly from the section line on the southern edge of Section 14 in Township 7 South, Range 2 West. (20) The boundary follows this section line west, along the southern edges of Sections 14, 15, 16, 17, and 18 in Township 7 South, Range 2 West, to Tucalota Creek. (21) The boundary follows Tucalota Creek southerly to Santa Gertrudis Creek. (22) The boundary follows Santa Gertrudis Creek southwesterly to Murrieta Creek. (23) The boundary proceeds northwesterly along the westernmost branches of Murrieta Creek to its intersection with Hayes Avenue, northwest of Murrieta, California. (24) The boundary follows Hayes Avenue northwesterly, approximately 4,000 feet, to its terminus at an unnamed, unimproved, fair or dry weather road. (25) The boundary follows this road southwesterly to Murrieta Creek. (26) The boundary proceeds northwesterly along the westernmost branches of Murrieta Creek to its intersection with Orange Street in Wildomar, California. (27) From the intersection of Murrieta Creek and Orange Street in Wildomar, California, the boundary proceeds in a straight line to the beginning point.