August weather forecast
Alta Loma, CA

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Weather in August

August, the last month of the summer in Alta Loma, is another hot month, with an average temperature ranging between min 66.7°F (19.3°C) and max 91.2°F (32.9°C).

Temperature

Alta Loma registers the highest average temperatures during the month of August, with peaks of 91.2°F (32.9°C) and lows of 66.7°F (19.3°C).

Heat index

The heat index value during August is computed to be a tropical 93.2°F (34°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

The least humid month is August, with an average relative humidity of 41%.

Rainfall

In Alta Loma, in August, it is raining for 1.6 days, with typically 0.12" (3mm) of accumulated precipitation. In Alta Loma, during the entire year, the rain falls for 50.5 days and collects up to 7.56" (192mm) of precipitation.

Daylight

In Alta Loma, the average length of the day in August is 13h and 23min.
On the first day of August in Alta Loma, sunrise is at 6:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:17 pm PDT.

Sunshine

In August, the average sunshine is 12h.

UV index

July and August, with an average maximum UV index of 7, are months with the highest UV index in Alta Loma. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 7 suggests these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

The average temperatures reach their apex in August, averaging 91.2°F (32.9°C) at the high end and 66.7°F (19.3°C) at the low end.

How hot does it get in August?

In Alta Loma, in August, the average high-temperature is 91.2°F (32.9°C), and the average low-temperature is 66.7°F (19.3°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 41%.

What is the average humidity in August?

In Alta Loma, the average relative humidity in August is 41%.

How much does it rain in August?

In Alta Loma, during August, the rain falls for 1.6 days and regularly aggregates up to 0.12" (3mm) of precipitation.

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

In August, the average day length is 13h and 23min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:17 pm PDT.

How long on average sun shines in August?

In August, the average sunshine duration in Alta Loma is 12h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Alta Loma, CA

Average temperature in August - Alta Loma, CA
  • Average high temperature in August: 91.2°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 August: 66.7°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 August
Alta Loma, CA

Average pressure in August - Alta Loma, CA
  • Average pressure in August: 29.88"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 August
Alta Loma, CA

Average wind speed in August - Alta Loma, CA
  • Average wind speed in August: 4.8mph

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 August
Alta Loma, CA

Average humidity in August - Alta Loma, CA
  • Average humidity in August: 41%

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 August
Alta Loma, CA

Average rainfall in August - Alta Loma, CA
  • Average rainfall in August: 0.12"

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 August
Alta Loma, CA

Average rainfall days in August - Alta Loma, CA
  • Average rainfall days in August: 1.6 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 August /
Average sunshine in August
Alta Loma, CA

Average daylight in August / Average sunshine in August - Alta Loma, CA
  • Average daylight in August: 13h 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 August: 12h and 0min

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 August
Alta Loma, CA

Average sunshine days in August - Alta Loma, CA
  • Average sunshine days in August: 26.7 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 August
Alta Loma, CA

Average UV index in August - Alta Loma, CA
  • Average UV index in August: 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 August
Alta Loma, CA

Average cloud cover in August - Alta Loma, CA
  • Average cloud cover in August: 4

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 August
Alta Loma, CA

Average visibility in August - Alta Loma, CA
  • Average visibility in August: 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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