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Napa Valley United States of America
Temperatures in August
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Temperature in Napa Valley in August

Napa Valley is a region in the United States of America. August in has maximum daytime temperatures ranging from high in American Canyon with 27°C to very high temperatures in Calistoga with 32°C. Nighttime temperatures generally drop to 12°C in Calistoga and 12°C in American Canyon. The month of August is in the summer season.

What is the temperature of the different cities in Napa Valley in August?

Explore the map below to discover average August temperatures at the top destinations in Napa Valley. For a deeper dive, simply click on any destination dot.

Weather conditions Weather
Temperatures
Precipitation
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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in August in Napa Valley?
    • Data insights from our comprehensive database indicate that Calistoga is the city with the highest warmth. Daytime peaks average near 32°C, while the nights are characterized by a low temperature close to 12°C."

  • What is the coldest city in August in Napa Valley?
    • Our database indicates that in August, American Canyon is the city with the coolest temperatures in Napa Valley. You can expect daytime highs of 27°C and nighttime lows close to 12°C.

  • How much sun does Napa Valley get in August?
    • Napa enjoys close to 290 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.

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