June weather forecast
O'Brien, CA

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Weather in June

June, the first month of the summer in O'Brien, is a warm month, with an average temperature fluctuating between 53.8°F (12.1°C) and 82.4°F (28°C).

Temperature

Entering June, O'Brien sees a temperature rise, with the average high-temperature advancing from May's agreeable 71.2°F (21.8°C) to a warm 82.4°F (28°C). Despite substantial daily fluctuations, the average low-temperature is a fresh 53.8°F (12.1°C) during June.

Heat index

In June, the heat index is appraised at 82.4°F (28°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In June, the average relative humidity is 48%.

Rainfall

In O'Brien, in June, during 4.7 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 102.3 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

Snowfall

In O'Brien, snow does not fall in April through October.

Daylight

June has the longest days of the year, with an average of 15h and 6min of daylight.
On the first day of June, sunrise is at 5:39 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:44 pm PDT.

Sunshine

The average sunshine in June in O'Brien is 11.9h.

UV index

The average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In June, a daily UV index of 6 turns into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during June?

June temperatures vary between a high-temperature of 82.4°F (28°C) and a low-temperature of 53.8°F (12.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in June is appraised at 82.4°F (28°C).

What is the average humidity in June?

The average relative humidity in June is 48%.

How many days does it rain in June?

In O'Brien, in June, it is raining for 4.7 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

When are the longest days?

June has the longest days of the year, with an average of 15h and 6min of daylight.

What is the average length of the day in June?

The average day length in June in O'Brien, California, is 15h and 4min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:39 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:44 pm PDT.

How long on average sun shines in June?

In June, the average sunshine duration in O'Brien is 11.9h.

What is the UV index reading in June?

The average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
O'Brien, CA

Average temperature in June - O
  • Average high temperature in June: 82.4°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (47.8°F).

  • Average low temperature in June: 53.8°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).

Average pressure in June
O'Brien, CA

Average pressure in June - O
  • Average pressure in June: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

Average wind speed in June
O'Brien, CA

Average wind speed in June - O
  • Average wind speed in June: 5.2mph

The windiest months (with the highest average wind speed) are March and October (5.3mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).

Average humidity in June
O'Brien, CA

Average humidity in June - O
  • Average humidity in June: 48%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is August (37%).

Average rainfall in June
O'Brien, CA

Average rainfall in June - O
  • Average rainfall in June: 0.39"

The wettest month (with the highest rainfall) is March (4.8").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days in June
O'Brien, CA

Average rainfall days in June - O
  • Average rainfall days in June: 4.7 days

The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.7 days).

Average snowfall in June
O'Brien, CA

Average snowfall in June - O
  • Average snowfall in June: 0"

The month with the highest snowfall is November (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
O'Brien, CA

Average snowfall days in June - O
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in June /
Average sunshine in June
O'Brien, CA

Average daylight in June / Average sunshine in June - O
  • Average daylight in June: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in June: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in June
O'Brien, CA

Average sunshine days in June - O
  • Average sunshine days in June: 23.4 days

The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is March (11.8 days).

Average UV index in June
O'Brien, CA

Average UV index in June - O
  • Average UV index in June: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 2).

Average cloud cover in June
O'Brien, CA

Average cloud cover in June - O
  • Average cloud cover in June: 12

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in June
O'Brien, CA

Average visibility in June - O
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).

O'Brien, California, USA

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