June weather forecast and climate
Fontana, CA

Weather in June

June, the first month of the summer, in Fontana, is also a moderately hot month, with average temperature ranging between min 59.2°F (15.1°C) and max 85.3°F (29.6°C).

Temperature

In June, the average high-temperature slightly increases, from a warm 76.6°F (24.8°C) in May, to a still moderately hot 85.3°F (29.6°C). In June, the average low-temperature is 59.2°F (15.1°C).

Heat index

In June, the average heat index is evaluated at a hot 86.4°F (30.2°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, differences in body mass, height, and shape, metabolic differences, and wind 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in Fontana 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

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

Daylight

June has the longest days of the year in Fontana, with an average of 14.4h of daylight.

Sunshine

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

UV index

In June, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in June in Fontana?

The average high-temperature, in June, is 85.3°F (29.6°C), while the average low-temperature is 59.2°F (15.1°C). In June, the average heat index (a.k.a. 'real feel', 'feels like'), that factores the actual air temperature with the relative humidity, is appraised at 86.4°F (30.2°C).

What is the average humidity in June in Fontana?

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

How many days does it rain in June in Fontana?

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

What is the driest month in Fontana?

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.

When it does not snow in Fontana?

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

When are the longest days in Fontana?

June has the longest days of the year in Fontana, California, with an average of 14.4h of daylight.

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

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

What is the month with the most sunshine in Fontana?

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

How long on average sun shines in June in Fontana?

In Fontana, the average sunshine in June is 12.1h.

How high is the UV index in June in Fontana?

In Fontana, the average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

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).

[Resources]

Average pressure in June
Fontana, CA

Average pressure in June - Fontana, 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").

[Resources]

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).

[Resources]

Average humidity in June
Fontana, CA

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

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

[Resources]

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").

[Resources]

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).

[Resources]

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).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

[Resources]

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

Average daylight in June / Average sunshine in June - Fontana, 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

Months with the most sunshine are June, July and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.9h).

[Resources]

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).

[Resources]

Average UV index in June
Fontana, CA

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

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).

[Resources]

Average cloud cover in June
Fontana, CA

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

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).

[Resources]

Average visibility in June
Fontana, CA

Average visibility in June - Fontana, 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).

[Resources]