June weather forecast and climate
San Bernardino, CA

Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains
Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains

Weather in June

The first month of the summer, June, is still a warm month in San Bernardino, California, with average temperature fluctuating between 58.5°F (14.7°C) and 85.1°F (29.5°C).

Temperature

In San Bernardino, California, the average high-temperature in June marginally rises, from 76.5°F (24.7°C) in May, to a still warm 85.1°F (29.5°C). The average low-temperature, in San Bernardino, is 58.5°F (14.7°C).

Heat index

In June, the average heat index is evaluated at 85.6°F (29.8°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, wind, metabolic differences, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity is 46%.

Rainfall

June is the month with the least rainfall. Rain falls for 1.2 days and accumulates 0.04" (1mm) of precipitation.

Snowfall

In San Bernardino snow does not fall in January, March through December.

Daylight

The month with the longest days in San Bernardino is June, with an average of 14.4h of daylight.

Sunshine

In June, the average sunshine is 12.1h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in San Bernardino. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in June interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in June in San Bernardino?

In San Bernardino, California, in June, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 58.5°F (14.7°C). In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that factores the actual air temperature with the relative humidity, is appraised at 85.6°F (29.8°C).

What is the average humidity in June in San Bernardino?

In June, the average relative humidity in San Bernardino, California, is 46%.

How much does it rain in San Bernardino in June?

In San Bernardino, in June, during 1.2 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

What is the driest month in San Bernardino?

June is the month with the least rainfall in San Bernardino. Rain falls for 1.2 days and accumulates 0.04" (1mm) of precipitation.

When it does not snow in San Bernardino?

January, March through December are months without snowfall.

When are the longest days in San Bernardino?

With an average of 14.4h of daylight, June has the longest days of the year in San Bernardino, California.

What is the average length of the day in June in San Bernardino?

In San Bernardino, California, the average length of the day in June is 14.4h.

How long on average sun shines in June in San Bernardino?

The average sunshine in June in San Bernardino, California, is 12.1h.

When is the highest UV index in San Bernardino?

Months with the highest UV index in San Bernardino are June through August, with an average maximum UV index of 7.

What is the UV index intensity in June in San Bernardino?

The average daily maximum UV index in June is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in June
San Bernardino, CA

Average temperature in June - San Bernardino, CA
  • Average high temperature in June: 85.1°F

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

  • Average low temperature in June: 58.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

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Average pressure in June
San Bernardino, CA

Average pressure in June - San Bernardino, CA
  • Average pressure in June: 29.85"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in June
San Bernardino, CA

Average wind speed in June - San Bernardino, CA
  • Average wind speed in June: 5.5mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in June
San Bernardino, CA

Average humidity in June - San Bernardino, CA
  • Average humidity in June: 46%

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in June
San Bernardino, CA

Average rainfall in June - San Bernardino, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in June
San Bernardino, CA

Average rainfall days in June - San Bernardino, CA
  • Average rainfall days in June: 1.2 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in June
San Bernardino, CA

Average snowfall days in June - San Bernardino, CA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in June /
Average sunshine in June
San Bernardino, CA

Average daylight in June / Average sunshine in June - San Bernardino, CA
  • Average daylight in June: 14.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in June: 12.1h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in June
San Bernardino, CA

Average sunshine days in June - San Bernardino, CA
  • Average sunshine days in June: 27.9 days

Months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).

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Average UV index in June
San Bernardino, CA

Average UV index in June - San Bernardino, CA
  • Average UV index in June: 7

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in June
San Bernardino, CA

Average cloud cover in June - San Bernardino, CA
  • Average cloud cover in June: 6

Months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in June
San Bernardino, CA

Average visibility in June - San Bernardino, 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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