Yountville (CA) Temperature by Month
Yountville in California, United States of America sees significant seasonal temperature differences, with daytime highs between 14°C (57°F) in January and 32°C (90°F) in July, averaging 23°C (73°F) annually. Explore the full monthly breakdown below.
Yountville Monthly Temperatures
Visitors to Yountville will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 13°C (55°F) in July to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Yountville by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 306 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Yountville vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Yountville vs World: Temperature Compared
Yountville's average annual maximum temperature is 23°C (73°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Yountville's weather — including monthly rainfall, sunshine hours, and humidity — visit our Yountville climate page.
