July weather forecast
Alta Loma, CA

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Weather in July

July is a tropical summer month in Alta Loma, California, with an average temperature ranging between min 64.8°F (18.2°C) and max 90.3°F (32.4°C).

Temperature

The shift from June to July is marked by a slight increase in the average high-temperature, moving from a moderately hot 84.7°F (29.3°C) to a hot 90.3°F (32.4°C). Alta Loma, in July, displays a significant temperature downturn during the night, with an average reading of 64.8°F (18.2°C).

Heat index

July's mean heat index is computed to be a hot 93.2°F (34°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The average relative humidity in July is 44%.

Rainfall

In Alta Loma, in July, during 3.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. Throughout the year, there are 50.5 rainfall days, and 7.56" (192mm) of precipitation is accumulated.

Daylight

In July, the average length of the day is 14h and 10min.
On the first day of July, sunrise is at 5:42 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:51 pm PDT.

Sunshine

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

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in July?

The average high-temperature, in July, in Alta Loma, is 90.3°F (32.4°C), while the average low-temperature is 64.8°F (18.2°C). In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 93.2°F (34°C).

What is the average humidity in July in Alta Loma?

In Alta Loma, California, the average relative humidity in July is 44%.

How many days does it rain in July?

In July, the rain falls for 3.1 days. Throughout July, 0.2" (5mm) of precipitation is accumulated.

How many hours of daylight does Alta Loma have in July?

In July, the average day length is 14h and 10min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:42 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:51 pm PDT.

What month has the most sunshine?

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

How many hours of sunshine does Alta Loma have in July?

The average sunshine duration in July is 12.1h.

What are the months with the highest UV index?

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 Alta Loma, the average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Alta Loma, CA

Average temperature in July - Alta Loma, CA
  • Average high temperature in July: 90.3°F

The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is December (61.3°F).

  • Average low temperature in July: 64.8°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (45.1°F).

Average pressure in July
Alta Loma, CA

Average pressure in July - Alta Loma, 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).

Average wind speed in July
Alta Loma, CA

Average wind speed in July - Alta Loma, CA
  • Average wind speed in July: 5.1mph

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

Average humidity in July
Alta Loma, CA

Average humidity in July - Alta Loma, 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%).

Average rainfall in July
Alta Loma, CA

Average rainfall in July - Alta Loma, CA
  • Average rainfall in July: 0.2"

The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in July
Alta Loma, CA

Average rainfall days in July - Alta Loma, CA
  • Average rainfall days in July: 3.1 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).

Average daylight in July /
Average sunshine in July
Alta Loma, CA

Average daylight in July / Average sunshine in July - Alta Loma, CA
  • Average daylight in July: 14h and 1min

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 July: 12h and 1min

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

Average sunshine days in July
Alta Loma, CA

Average sunshine days in July - Alta Loma, CA
  • Average sunshine days in July: 25.1 days

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is February (21.4 days).

Average UV index in July
Alta Loma, CA

Average UV index in July - Alta Loma, 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).

Average cloud cover in July
Alta Loma, CA

Average cloud cover in July - Alta Loma, CA
  • Average cloud cover in July: 6

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

Average visibility in July
Alta Loma, CA

Average visibility in July - Alta Loma, 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).

Alta Loma, California, USA

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