June weather forecast
Fontana, CA

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Weather in June

June, the first month of the summer in Fontana, is also a moderately hot month, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 59.2°F (15.1°C).

Temperature

In Fontana, the average high-temperature in June slightly rises, from 76.6°F (24.8°C) in May, to a still warm 85.3°F (29.6°C). Fontana's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 59.2°F (15.1°C) in June.

Heat index

The heat index value during June is calculated to be a hot 86°F (30°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In Fontana, the average relative humidity in June is 48%.

Rainfall

The month with the least rainfall in Fontana is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Fontana.

Daylight

The month with the longest days is June, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 5:38 am and sunset at 7:56 pm. On the last day of June, in Fontana, sunrise is at 5:41 am and sunset at 8:05 pm PDT.

Sunshine

The months with the most sunshine are June through August, with an average of 12.1h of sunshine.

UV index

The average daily maximum UV index in June in Fontana, California, is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In June, the maximum UV index of 6 transforms into these recommendations:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

Is it hot in Fontana during June?

In Fontana, 85.3°F (29.6°C) is the average high-temperature and 59.2°F (15.1°C) is the average low-temperature during June. In June, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 86°F (30°C).

What is the average humidity in June in Fontana?

The average relative humidity in June in Fontana is 48%.

What is the driest month in Fontana?

The month with the least rainfall in Fontana, California, is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

How much does it rain in Fontana in June?

In June, the rain falls for 1.2 days. Throughout June, 0.04" (1mm) of precipitation is accumulated.

When it does not snow in Fontana?

January, March through December are months without snowfall in Fontana, California.

When are the longest days in Fontana?

With an average of 14h and 24min of daylight, June has the longest days of the year in Fontana.

What is the average length of the day in June in Fontana?

In June, the average day length in Fontana is 14h and 23min.

What time are sunrise and sunset in June in Fontana?

On the first day of June, sunrise is at 5:38 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:05 pm PDT.

What is the month with the most sunshine in Fontana?

The months with the most sunshine in Fontana, California, are June through August, with an average of 12.1h of sunshine.

How many hours of sunshine does Fontana have in June?

The average sunshine duration in June is 12.1h.

What is the UV index intensity in June in Fontana?

In June, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Fontana, CA

Average temperature in June - Fontana, CA
  • Average high temperature in June: 85.3°F

The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in June: 59.2°F

The month with the highest average low temperature is August (67.3°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).

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Average pressure in June
Fontana, CA

Average pressure in June - Fontana, CA
  • Average pressure in June: 29.85"Hg

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

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Average wind speed in June
Fontana, CA

Average wind speed in June - Fontana, CA
  • Average wind speed in June: 5.6mph

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
Fontana, CA

Average humidity in June - Fontana, CA
  • Average humidity in June: 48%

The months with the highest relative humidity are February, March and May (52%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in June
Fontana, CA

Average rainfall in June - Fontana, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is February (1.57").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in June
Fontana, CA

Average rainfall days in June - Fontana, CA
  • Average rainfall days in June: 1.2 days

The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in June
Fontana, CA

Average snowfall days in June - Fontana, CA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The 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
Fontana, CA

Average daylight in June / Average sunshine in June - Fontana, CA
  • Average daylight in June: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in June: 12h and 1min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in June
Fontana, CA

Average sunshine days in June - Fontana, CA
  • Average sunshine days in June: 28.3 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.1 days).

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Average UV index in June
Fontana, CA

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

The months with the highest UV index are 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
Fontana, CA

Average cloud cover in June - Fontana, CA
  • Average cloud cover in June: 7

The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in June
Fontana, CA

Average visibility in June - Fontana, 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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Fontana, California, USA

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