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

Napa Valley is a region in the United States of America. In May the average maximum daytime temperatures are high and range from 23°C in American Canyon to 26°C in St. Helena. Nighttime temperatures generally drop to 10°C in St. Helena and 9°C in American Canyon.

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

Discover the typical May temperatures for the most popular locations of Napa Valley on the map below. Detailed insights are just a click away.

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 May in Napa Valley?
    • Data insights from our comprehensive database indicate that St. Helena is the city with the highest warmth. Daytime peaks average near 26°C, while the nights are characterized by a low temperature close to 10°C."

  • What is the coldest city in May in Napa Valley?
    • Our database indicates that in May, American Canyon is the city with the coolest temperatures in Napa Valley. You can expect daytime highs of 23°C and nighttime lows close to 9°C.

  • How much sun does Napa Valley get in May?
    • The weather is predominantly sunny, with an estimated total of around 310 hours of sunshine in Napa. This means many sunny days, which creates a cheerful atmosphere during this month.

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