June weather forecastNapa Junction, CA
June
Weather in June
The first month of the summer, June, is a moderately hot month in Napa Junction, California, with an average temperature varying between 54.3°F (12.4°C) and 79.7°F (26.5°C).Temperature
In Napa Junction, stepping into June brings a gentle temperature nudge, moving slightly up from May's pleasant 72°F (22.2°C) to a warm 79.7°F (26.5°C). Napa Junction registers a marked temperature plunge to a fresh 54.3°F (12.4°C) during the cool June nights.Humidity
In June, the average relative humidity in Napa Junction, California, is 60%.Rainfall
In Napa Junction, California, during June, the rain falls for 1.4 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Napa Junction, during the entire year, the rain falls for 68.2 days and collects up to 11.93" (303mm) of precipitation.Daylight
With an average of 14h and 48min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:47 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:36 pm PDT.
Sunshine
In June, the average sunshine is 11.7h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Napa Junction. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 6 in June, converts into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Napa Junction, CA
- Average high temperature in June: 79.7°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in June: 54.3°F
The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).
Average pressure in June
Napa Junction, CA
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Napa Junction, CA
- Average wind speed in June: 6.3mph
The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in June
Napa Junction, CA
- Average humidity in June: 60%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (58%).
Average rainfall in June
Napa Junction, CA
- Average rainfall in June: 0.08"
The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Napa Junction, CA
- Average rainfall days in June: 1.4 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is August (0.9 days).
Average daylight in June /
Average sunshine in June
Napa Junction, CA
- Average daylight in June: 14h and 48min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in June: 11h and 42min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in June
Napa Junction, CA
- Average sunshine days in June: 27.8 days
The months with the most sunshine days are July and August (29.1 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in June
Napa Junction, CA
- Average UV index in June: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
Napa Junction, CA
- Average cloud cover in June: 13
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in June
Napa Junction, CA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
