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Napa County, CA (shown in white) has 751.98 mi² of land area and 40.33 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 4,025.6', with a weighted average of 937.4' above sea level.
Temperatures range from average lows around 37.4°F to average highs around 91.5°F. A year-round daily temperature averages 59.6°F. Average annual precipation is 28.8". With these temperatures and precipation, the majority of the county scores as an 9B using the USDA Plant Hardiness Zone Map (the standard by which gardeners and growers can determine which perennial plants are most likely to thrive in a location).
The estimated population of Napa County is 135,973 with 48,918 households. These households are spread across 11 unique municipalties (not all shown).
