June weather forecast and climate
Vallejo, CA

A colorful orange sunset skyline seen over the Napa River and Bridge in Vallejo, California
A colorful orange sunset skyline seen over the Napa River and Bridge in Vallejo, California

Weather in June

The first month of the summer, June, is a warm month in Vallejo, California, with average temperature ranging between max 77.7°F (25.4°C) and min 54.1°F (12.3°C).

Temperature

In Vallejo, the average high-temperature marginally rises, from a pleasant 71.1°F (21.7°C) in May, to a moderately hot 77.7°F (25.4°C). The average low-temperature, in June, is 54.1°F (12.3°C).

Humidity

In Vallejo, California, the average relative humidity is 62%.

Rainfall

In June, the rain falls for 1.1 days. Throughout June, 0.08" (2mm) of precipitation is accumulated. In Vallejo, during the entire year, the rain falls for 56.9 days and collects up to 4.88" (124mm) of precipitation.

Daylight

With an average of 14.8h of daylight, June has the longest days of the year in Vallejo.

Sunshine

In Vallejo, the average sunshine is 11.7h.

UV index

With an average maximum UV index of 6, June is the month with the highest UV index in Vallejo. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in June in Vallejo?

In June, in Vallejo, the average high-temperature is 77.7°F (25.4°C), and the average low-temperature is 54.1°F (12.3°C).

What is the average humidity in June in Vallejo?

In June, the average relative humidity in Vallejo is 62%.

How much does it rain in Vallejo in June?

In June, in Vallejo, California, the rain falls for 1.1 days. Throughout June, 0.08" (2mm) of precipitation is accumulated.

When are the longest days in Vallejo?

June has the longest days of the year, with an average of 14.8h of daylight.

How many hours of daylight does Vallejo have in June?

In June, the average length of the day in Vallejo, California, is 14.8h.

How long on average sun shines in June in Vallejo?

In Vallejo, California, the average sunshine in June is 11.7h.

When is the highest UV index in Vallejo?

With an average maximum UV index of 6, June is the month with the highest UV index in Vallejo.

What is the UV index intensity in June in Vallejo?

The average daily maximum UV index in June in Vallejo, California, is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in June
Vallejo, CA

Average temperature in June - Vallejo, CA
  • Average high temperature in June: 77.7°F

The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in June: 54.1°F

The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).

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Average pressure in June
Vallejo, CA

Average pressure in June - Vallejo, CA
  • Average pressure in June: 29.91"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in June
Vallejo, CA

Average wind speed in June - Vallejo, CA
  • Average wind speed in June: 6.9mph

The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

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Average humidity in June
Vallejo, CA

Average humidity in June - Vallejo, CA
  • Average humidity in June: 62%

The month with the highest relative humidity is March (75%).
Months with the lowest relative humidity are September and October (60%).

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Average rainfall in June
Vallejo, CA

Average rainfall in June - Vallejo, CA
  • Average rainfall in June: 0.08"

The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in June
Vallejo, CA

Average rainfall days in June - Vallejo, CA
  • Average rainfall days in June: 1.1 days

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).

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Average daylight in June /
Average sunshine in June
Vallejo, CA

Average daylight in June / Average sunshine in June - Vallejo, CA
  • Average daylight in June: 14.8h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in June: 11.7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in June
Vallejo, CA

Average sunshine days in June - Vallejo, CA
  • Average sunshine days in June: 26.7 days

The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).

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Average UV index in June
Vallejo, CA

Average UV index in June - Vallejo, CA
  • Average UV index in June: 6

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in June
Vallejo, CA

Average cloud cover in June - Vallejo, CA
  • Average cloud cover in June: 14

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in June
Vallejo, CA

Average visibility in June - Vallejo, CA
  • Average visibility in June: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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