The weather in June in Napa

It's warm in June in Napa with an average temperature of 27°C. Temperatures this month range from a low of 23°C to a high of 31°C. At night, you can expect temperatures between 10°C and 14°C.

Looking for great weather? June is a good time to be in Napa. The temperatures are nice, and there’s little chance of rain this month.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in June for Napa, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 39°C in 2017, Napa reached the highest temperature in June over the past 10 years. The lowest daytime temperature in this month was 18°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 6°C to a highest value of 19°C.

Rainfall amount

According to weather history, there is only 2,5 mm of precipitation in June. The wind speed is around 5 Bft, mostly coming from the Southwest.

Daily weather in June for Napa

Click on any day in June to get detailed info about the usual weather on that day in Napa. Check out the historical temperatures and precipitation over the past 10 years on this day.

June weather comparison

  Napa New York
Average temperature 27°C 27°C
Max. temperature 31°C 31°C
Min. temperature 10°C -5°C
Total precipitation 2,5 mm 78 mm
Rainy days 1 day 11 days

Start of June

The month of June starts in Napa with hot temps, averaging around 27°C during the day and nights around 13°C.

Mid June

By mid-June, daytime temps stay steady at around 27°C, with nights around 12°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.

End of June

By the end of June, the average daytime temperature in Napa is around 28°C, while nighttime temps are about 13°C. No precipitation expected at the end of the month; it’ll be mostly sunny.

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UV index

The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Check out the climate of Napa for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in June in Napa, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in June in Napa

Temperature in June in Napa over the years

Precipitation charts

These charts show the average amount of precipitation in June in Napa, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in June in Napa

Total precipitation in June in Napa over the years

Daily UV index in June in Napa

This chart shows the average daily UV index in June in Napa, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Weather experiences in June in Napa

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Average weather in Napa by month

Click on a month below to see detailed weather info for Napa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.