June weather forecast
Rancho Cucamonga, CA

Weather in June

June, the first month of the summer in Rancho Cucamonga, is still a warm month, with an average temperature fluctuating between 58.6°F (14.8°C) and 84.7°F (29.3°C).

Temperature

In June, the average high-temperature marginally rises from a moderately hot 76.6°F (24.8°C) in May to a still warm 84.7°F (29.3°C). The average low-temperature, in June, is 58.6°F (14.8°C).

Heat index

In June, the average heat index is computed to be a hot 86.2°F (30.1°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values 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 a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

In June, the average relative humidity in Rancho Cucamonga is 50%.

Rainfall

June is the month with the least rainfall. Rain falls for 0.9 days and accumulates 0.04" (1mm) of precipitation.

Snowfall

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

Daylight

June has the longest days of the year in Rancho Cucamonga, with an average of 14h and 23min of daylight.
On the first day of June in Rancho Cucamonga, sunrise is at 5:39 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:06 pm PDT.

Sunshine

The average sunshine in June is 12h.

UV index

In Rancho Cucamonga, the average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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 the 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 Rancho Cucamonga?

The average high-temperature, in June, is 84.7°F (29.3°C), while the average low-temperature is 58.6°F (14.8°C). In June, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86.2°F (30.1°C).

What is the average humidity in June in Rancho Cucamonga?

In Rancho Cucamonga, the average relative humidity in June is 50%.

What is the driest month in Rancho Cucamonga?

The month with the least rainfall in Rancho Cucamonga is June, when the rain falls for 0.9 days and typically collects 0.04" (1mm) of precipitation.

How much does it rain in Rancho Cucamonga in June?

In Rancho Cucamonga, during June, the rain falls for 0.9 days and regularly aggregates up to 0.04" (1mm) of precipitation.

When it does not snow in Rancho Cucamonga?

In Rancho Cucamonga, California, snow does not fall in January, March through December.

When are the longest days in Rancho Cucamonga?

With an average of 14h and 23min of daylight, June has the longest days of the year.

What is the average length of the day in June in Rancho Cucamonga?

In Rancho Cucamonga, California, the average day length in June is 14h and 23min.

When is the sunrise / sunset in June in Rancho Cucamonga?

In June, on the first day of the month, sunrise is at 5:39 am and sunset at 7:56 pm. On the last day of the month, in Rancho Cucamonga, California, sunrise is at 5:42 am and sunset at 8:06 pm PDT.

How many hours of sunshine does Rancho Cucamonga have in June?

In June, the average sunshine duration in Rancho Cucamonga is 12h.

What is the UV index intensity in June in Rancho Cucamonga?

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

Average temperature in June
Rancho Cucamonga, CA

Average temperature in June - Rancho Cucamonga, CA
  • Average high temperature in June: 84.7°F

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in June: 58.6°F

The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).

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Average pressure in June
Rancho Cucamonga, CA

Average pressure in June - Rancho Cucamonga, CA
  • Average pressure in June: 29.86"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in June
Rancho Cucamonga, CA

Average wind speed in June - Rancho Cucamonga, CA
  • Average wind speed in June: 5.5mph

The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in June
Rancho Cucamonga, CA

Average humidity in June - Rancho Cucamonga, CA
  • Average humidity in June: 50%

The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in June
Rancho Cucamonga, CA

Average rainfall in June - Rancho Cucamonga, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in June
Rancho Cucamonga, CA

Average rainfall days in June - Rancho Cucamonga, CA
  • Average rainfall days in June: 0.9 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall days in June
Rancho Cucamonga, CA

Average snowfall days in June - Rancho Cucamonga, 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
Rancho Cucamonga, CA

Average daylight in June / Average sunshine in June - Rancho Cucamonga, CA
  • Average daylight in June: 14h and 23min

The month with the longest days is June (Average daylight: 14h and 23min).
The month with the shortest days is December (Average daylight: 9h and 56min).

  • Average sunshine in June: 12h and 0min

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

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Average sunshine days in June
Rancho Cucamonga, CA

Average sunshine days in June - Rancho Cucamonga, 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 (22.8 days).

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Average UV index in June
Rancho Cucamonga, CA

Average UV index in June - Rancho Cucamonga, 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
Rancho Cucamonga, CA

Average cloud cover in June - Rancho Cucamonga, CA
  • Average cloud cover in June: 7

The 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
Rancho Cucamonga, CA

Average visibility in June - Rancho Cucamonga, 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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