August weather forecast and climate
Perris, CA

Landscape in the State Recreation Area on Lake Perris, California
Landscape in the State Recreation Area on Lake Perris, California

Weather in August

August, the last month of the summer, in Perris, is another tropical month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 89.6°F (32°C).

Temperature

The warmest month is August, with an average high-temperature of 89.6°F (32°C) and an average low-temperature of 63.3°F (17.4°C).

Heat index

In August, the average heat index is evaluated at a tropical 92.7°F (33.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like wind, differences in body mass, height, and shape, clothing, and activity influence one's weather impression. 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

The least humid month is August, with an average relative humidity of 47%.

Rainfall

In Perris, during August, the rain falls for 3.8 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Perris, during the entire year, the rain falls for 55.7 days and collects up to 7.05" (179mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In Perris, the average length of the day in August is 13.4h.

Sunshine

In Perris, the average sunshine is 12h.

UV index

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Perris?

August is the warmest month, with an average high-temperature of 89.6°F (32°C) and an average low-temperature of 63.3°F (17.4°C).

What is the temperature in August in Perris?

In Perris, California, in August, the average high-temperature is 89.6°F (32°C), and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that represents influence of the relative humidity to air temperaure, in August is estimated at 92.7°F (33.7°C).

What is the least humid month in Perris?

August is the least humid month in Perris, California, with an average relative humidity of 47%.

What is the average humidity in August in Perris?

In Perris, the average relative humidity in August is 47%.

How many days does it rain in August in Perris?

In August, in Perris, the rain falls for 3.8 days. Throughout August, 0.31" (8mm) of precipitation is accumulated.

When it does not snow in Perris?

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

What is the average length of the day in August in Perris?

In August, the average length of the day in Perris is 13.4h.

How many hours of sunshine does Perris have in August?

In August, the average sunshine in Perris is 12h.

What is the UV index reading in August in Perris?

The average daily maximum UV index in August 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 August
Perris, CA

Average temperature in August - Perris, CA
  • Average high temperature in August: 89.6°F

The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is December (61°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in August
Perris, CA

Average pressure in August - Perris, CA
  • Average pressure in August: 29.87"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in August
Perris, CA

Average wind speed in August - Perris, CA
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.2mph).

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Average humidity in August
Perris, CA

Average humidity in August - Perris, CA
  • Average humidity in August: 47%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in August
Perris, CA

Average rainfall in August - Perris, CA
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Perris, CA

Average rainfall days in August - Perris, CA
  • Average rainfall days in August: 3.8 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.3 days).

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Average snowfall in August
Perris, CA

Average snowfall in August - Perris, CA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Perris, CA

Average snowfall days in August - Perris, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.2 days).
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 August /
Average sunshine in August
Perris, CA

Average daylight in August / Average sunshine in August - Perris, CA
  • Average daylight in August: 13.4h

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 August: 12h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in August
Perris, CA

Average sunshine days in August - Perris, CA
  • Average sunshine days in August: 24.5 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in August
Perris, CA

Average UV index in August - Perris, CA
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in August
Perris, CA

Average cloud cover in August - Perris, CA
  • Average cloud cover in August: 5

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in August
Perris, CA

Average visibility in August - Perris, CA
  • Average visibility in August: 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).

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