Napa weather in June 2025

Expect daytime maximum temperatures of 26°C in Napa, California in June based on long-term weather averages. There are 12 hours of sunshine per day on average.

  • 26°C maximum daytime temperature in June in Napa26
    26°C max day temperature
  • 12 hours of sunshine per day
  • 1 day with some rainfall in June in Napa1
    1 day with some rainfall
  • 11°C minimum night-time temperature in June in Napa11
    11°C min night temperature
  • 15 hours of daylight per day in June in Napa15
    15 hours of daylight per day
  • Low heat & humidity in June in NapaL
    Low heat & humidity
  • 5 mm monthly rainfall in June in Napa5
    5 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Napa9
    9 (Very High) UV index

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The June weather guide for California (Napa) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Napa in June?

Daytime temperatures usually reach 26°C in Napa in June with low heat and humidity, falling to 11°C at night.

How sunny is it in Napa in June?

There are normally 12 hours of bright sunshine each day in Napa in June - that's 80% of daylight hours.

Does it ever rain in Napa in June?

There is usually 1 day with some rain in Napa in June and the average monthly rainfall is 5mm.

Napa June sunrise & sunset times

Browse the sunrise and sunset times for Napa in June 2025. Select a month to view Napa sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st June 2025 04:47 19:27
Sunday, 15th June 2025 04:45 19:35
Monday, 30th June 2025 04:49 19:37

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