June weather forecast
Rio Vista, CA

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Weather in June

The first month of the summer, June, is a hot month in Rio Vista, California, with an average temperature fluctuating between 86.5°F (30.3°C) and 55.8°F (13.2°C).

Temperature

The beginning of June marks a shift in the average high-temperature, moving from May's moderately hot 76.6°F (24.8°C) to a tropical 86.5°F (30.3°C). June in Rio Vista witnesses a substantial contrast between the daytime highs and the average low of 55.8°F (13.2°C).

Heat index

The heat index value for June is computed to be a hot 89.6°F (32°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In June, the average relative humidity is 51%.

Rainfall

In Rio Vista, California, in June, it is raining for 1.5 days, with typically 0.08" (2mm) of accumulated precipitation. In Rio Vista, California, during the entire year, the rain falls for 68.7 days and collects up to 11.18" (284mm) of precipitation.

Daylight

June has the longest days of the year in Rio Vista, California, with an average of 14h and 48min of daylight.
On the first day of June, sunrise is at 5:45 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:33 pm PDT.

Sunshine

The average sunshine in June in Rio Vista is 11.8h.

UV index

The months with the highest UV index in Rio Vista are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in June translates into the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

How hot does it get in Rio Vista in June?

In Rio Vista, 86.5°F (30.3°C) is the average high-temperature and 55.8°F (13.2°C) is the average low-temperature during June. The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in June is computed to be 89.6°F (32°C).

What is the average humidity in June in Rio Vista?

In Rio Vista, California, the average relative humidity in June is 51%.

How much does it rain in Rio Vista in June?

In June, the rain falls for 1.5 days. Throughout June, 0.08" (2mm) of precipitation is accumulated.

When are the longest days in Rio Vista?

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

How many hours of daylight does Rio Vista have in June?

In Rio Vista, the average day length in June is 14h and 47min.

What time are sunrise and sunset in June in Rio Vista?

In June, on the first day of the month, sunrise is at 5:45 am and sunset at 8:24 pm. On the last day of the month, in Rio Vista, sunrise is at 5:47 am and sunset at 8:33 pm PDT.

How long on average sun shines in June in Rio Vista?

In June, the average sunshine duration is 11.8h.

When is the highest UV index in Rio Vista?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Rio Vista.

What is the UV index intensity in June in Rio Vista?

In June, the average daily maximum UV index in Rio Vista, California, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Rio Vista, CA

Average temperature in June - Rio Vista, CA
  • Average high temperature in June: 86.5°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in June: 55.8°F

The month with the highest average low temperature is September (58.1°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in June
Rio Vista, CA

Average pressure in June - Rio Vista, 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).

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Average wind speed in June
Rio Vista, CA

Average wind speed in June - Rio Vista, CA
  • Average wind speed in June: 7.6mph

The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

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Average humidity in June
Rio Vista, CA

Average humidity in June - Rio Vista, CA
  • Average humidity in June: 51%

The months with the highest relative humidity are January and March (74%).
The month with the lowest relative humidity is September (49%).

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Average rainfall in June
Rio Vista, CA

Average rainfall in June - Rio Vista, CA
  • Average rainfall in June: 0.08"

The wettest month (with the highest rainfall) is February (2.17").
The driest month (with the least rainfall) is August (0").

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Average rainfall days in June
Rio Vista, CA

Average rainfall days in June - Rio Vista, CA
  • Average rainfall days in June: 1.5 days

The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (0.7 days).

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Average daylight in June /
Average sunshine in June
Rio Vista, CA

Average daylight in June / Average sunshine in June - Rio Vista, 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 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in June
Rio Vista, CA

Average sunshine days in June - Rio Vista, CA
  • Average sunshine days in June: 28.1 days

The month with the most sunshine days is August (29.9 days).
The month with the least sunshine days is March (17.3 days).

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Average UV index in June
Rio Vista, CA

Average UV index in June - Rio Vista, 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).

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Average cloud cover in June
Rio Vista, CA

Average cloud cover in June - Rio Vista, CA
  • Average cloud cover in June: 10

The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in June
Rio Vista, CA

Average visibility in June - Rio Vista, 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).

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Rio Vista, California, USA

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