July weather forecast
Rancho Cucamonga, CA

Weather in July

July in Rancho Cucamonga, California, is a hot summer month, with an average temperature ranging between max 90.5°F (32.5°C) and min 64.8°F (18.2°C).

Temperature

In Rancho Cucamonga, the average high-temperature in July slightly increases from a warm 84.7°F (29.3°C) in June to a hot 90.5°F (32.5°C). The average low-temperature, in Rancho Cucamonga, is 64.8°F (18.2°C).

Heat index

In July, the average heat index is computed to be a tropical 92.8°F (33.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, pregnancy, clothing), and activity. 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 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

In Rancho Cucamonga, California, the average relative humidity in July is 44%.

Rainfall

In Rancho Cucamonga, during July, the rain falls for 2.8 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, in Rancho Cucamonga, there are 42.3 rainfall days, and 4.53" (115mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 14h and 10min.
On the first day of the month, sunrise is at 5:42 am and sunset at 8:06 pm. On the last day of July, sunrise is at 6:01 am and sunset at 7:52 pm PDT.

Sunshine

The month with the most sunshine in Rancho Cucamonga is July, with an average of 12.1h of sunshine.

UV index

The months with the highest UV index in Rancho Cucamonga are July and August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. 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.
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FAQ

What is the temperature in July in Rancho Cucamonga?

In Rancho Cucamonga, California, in July, the average high-temperature is 90.5°F (32.5°C), and the average low-temperature is 64.8°F (18.2°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 92.8°F (33.8°C).

What is the average humidity in July in Rancho Cucamonga?

In July, the average relative humidity in Rancho Cucamonga is 44%.

How many days does it rain in July in Rancho Cucamonga?

In Rancho Cucamonga, in July, during 2.8 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

When it does not snow in Rancho Cucamonga?

January, March through December are months without snowfall in Rancho Cucamonga.

How many hours of daylight does Rancho Cucamonga have in July?

In July, the average day length in Rancho Cucamonga, California, is 14h and 10min.

When are sunrise and sunset in July in Rancho Cucamonga?

In July, on the first day of the month, sunrise is at 5:42 am and sunset at 8:06 pm. On the last day of the month, in Rancho Cucamonga, sunrise is at 6:01 am and sunset at 7:52 pm PDT.

What month has the most sunshine in Rancho Cucamonga?

With an average of 12.1h of sunshine, July has the most sunshine of the year.

How long on average sun shines in July in Rancho Cucamonga?

The average sunshine duration in July in Rancho Cucamonga is 12.1h.

What are the months with the highest UV index in Rancho Cucamonga?

The months with the highest UV index are July and August, with an average maximum UV index of 7.

How high is the UV index in July in Rancho Cucamonga?

In July, the average daily maximum UV index in Rancho Cucamonga, California, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Rancho Cucamonga, CA

Average temperature in July - Rancho Cucamonga, CA
  • Average high temperature in July: 90.5°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 July: 64.8°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 July
Rancho Cucamonga, CA

Average pressure in July - Rancho Cucamonga, CA
  • Average pressure in July: 29.89"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 July
Rancho Cucamonga, CA

Average wind speed in July - Rancho Cucamonga, CA
  • Average wind speed in July: 5.1mph

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 July
Rancho Cucamonga, CA

Average humidity in July - Rancho Cucamonga, CA
  • Average humidity in July: 44%

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 July
Rancho Cucamonga, CA

Average rainfall in July - Rancho Cucamonga, CA
  • Average rainfall in July: 0.16"

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 July
Rancho Cucamonga, CA

Average rainfall days in July - Rancho Cucamonga, CA
  • Average rainfall days in July: 2.8 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 July
Rancho Cucamonga, CA

Average snowfall days in July - Rancho Cucamonga, CA
  • Average snowfall days in July: 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 July /
Average sunshine in July
Rancho Cucamonga, CA

Average daylight in July / Average sunshine in July - Rancho Cucamonga, CA
  • Average daylight in July: 14h and 10min

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 July: 12h and 6min

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 July
Rancho Cucamonga, CA

Average sunshine days in July - Rancho Cucamonga, CA
  • Average sunshine days in July: 25.3 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 July
Rancho Cucamonga, CA

Average UV index in July - Rancho Cucamonga, CA
  • Average UV index in July: 7

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 July
Rancho Cucamonga, CA

Average cloud cover in July - Rancho Cucamonga, CA
  • Average cloud cover in July: 6

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 July
Rancho Cucamonga, CA

Average visibility in July - Rancho Cucamonga, CA
  • Average visibility in July: 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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