June weather forecast
Vallejo, CA

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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

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

Temperature

Vallejo's June weather indicates a minor ascent in high-temperatures, adjusting from an agreeable 71.1°F (21.7°C) in May to a moderately hot 77.7°F (25.4°C). Vallejo registers a significant drop in temperature in June, with average nighttime lows of 54.1°F (12.3°C).

Humidity

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

Rainfall

In Vallejo, in June, it is raining for 1.1 days, with typically 0.08" (2mm) of accumulated precipitation. 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 14h and 48min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:26 pm. On the last day of June, sunrise is at 5:49 am and sunset at 8:36 pm PDT.

Sunshine

In June, 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. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 6 in June suggests the following recommendations:
Deflect overexposure. Sun protection is a necessity. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Frequently asked questions

What are June temperatures?

June temperatures vary between a high-temperature of 77.7°F (25.4°C) and a low-temperature of 54.1°F (12.3°C).

What is the average humidity in June?

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

How many days does it rain in June?

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

When are the longest days?

With an average of 14h and 48min of daylight, June has the longest days of the year.

How many hours of daylight does Vallejo have in June?

In June, the average day length is 14h and 46min.

What time are sunrise and sunset in June?

On the first day of June in Vallejo, California, 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.

How long on average sun shines in June?

The average sunshine duration in June is 11.7h.

When is the highest UV index?

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

What is the UV index reading in June?

In Vallejo, the average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

Average pressure in June
Vallejo, CA

Average pressure in June - Vallejo, 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
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).

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%).
The months with the lowest relative humidity are September and October (60%).

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").

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).

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

Average daylight in June / Average sunshine in June - Vallejo, CA
  • Average daylight in June: 14h and 5min

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 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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).

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).
The months with the lowest UV index are January, February, November and December (UV index 3).

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).

Average visibility in June
Vallejo, CA

Average visibility in June - Vallejo, 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).

Vallejo, California, USA

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