August weather forecast and climate
Moreno Valley, CA

Marina on Lake Perris State Park in Moreno Valley, California, with visible piers, luxury boats, and high hills
Marina on Lake Perris State Park in Moreno Valley, California, with visible piers, luxury boats, and high hills

Weather in August

The last month of the summer, August, is another tropical month in Moreno Valley, California, with average temperature ranging between max 90.7°F (32.6°C) and min 64.8°F (18.2°C).

Temperature

With an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 64.8°F (18.2°C), August is the warmest month.

Heat index

The average heat index is estimated at a tropical 92.5°F (33.6°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, clothing, differences in body mass, height, and shape), 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

With an average relative humidity of 42%, August is the least humid month.

Rainfall

In Moreno Valley, California, during August, the rain falls for 1.8 days and regularly aggregates up to 0.12" (3mm) of precipitation. In Moreno Valley, during the entire year, the rain falls for 52.6 days and collects up to 7.52" (191mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in Moreno Valley is 13.4h.

Sunshine

In August, the average sunshine is 12h.

UV index

In Moreno Valley, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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 warmest month in Moreno Valley?

With an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 64.8°F (18.2°C), August is the warmest month in Moreno Valley, California.

What is the temperature in August in Moreno Valley?

In August, the average high-temperature is 90.7°F (32.6°C), and the average low-temperature is 64.8°F (18.2°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines air temperature and relative humidity, is calculated to 92.5°F (33.6°C).

What is the least humid month in Moreno Valley?

August is the least humid month in Moreno Valley, with an average relative humidity of 42%.

What is the average humidity in August in Moreno Valley?

In August, the average relative humidity in Moreno Valley is 42%.

How much does it rain in Moreno Valley in August?

In Moreno Valley, in August, it is raining for 1.8 days, with typically 0.12" (3mm) of accumulated precipitation.

When it does not snow in Moreno Valley?

In Moreno Valley snow does not fall in January, March through December.

What is the average length of the day in August in Moreno Valley?

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

How many hours of sunshine does Moreno Valley have in August?

In August, the average sunshine in Moreno Valley, California, is 12h.

What is the UV index reading in August in Moreno Valley?

The average daily maximum UV index in August in Moreno Valley, California, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.

Average temperature in August
Moreno Valley, CA

Average temperature in August - Moreno Valley, CA
  • Average high temperature in August: 90.7°F

The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is August (64.8°F).
The coldest months (with the lowest average low temperature) are February and December (43.5°F).

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Average pressure in August
Moreno Valley, CA

Average pressure in August - Moreno Valley, 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
Moreno Valley, CA

Average wind speed in August - Moreno Valley, CA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average humidity in August
Moreno Valley, CA

Average humidity in August - Moreno Valley, CA
  • Average humidity in August: 42%

Months with the highest relative humidity are February and May (56%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in August
Moreno Valley, CA

Average rainfall in August - Moreno Valley, CA
  • Average rainfall in August: 0.12"

The wettest month (with the highest rainfall) is February (1.61").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Moreno Valley, CA

Average rainfall days in August - Moreno Valley, CA
  • Average rainfall days in August: 1.8 days

The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.3 days).

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Average snowfall in August
Moreno Valley, CA

Average snowfall in August - Moreno Valley, 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
Moreno Valley, CA

Average snowfall days in August - Moreno Valley, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.1 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
Moreno Valley, CA

Average daylight in August / Average sunshine in August - Moreno Valley, 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

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in August
Moreno Valley, CA

Average sunshine days in August - Moreno Valley, CA
  • Average sunshine days in August: 27.4 days

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (20.3 days).

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Average UV index in August
Moreno Valley, CA

Average UV index in August - Moreno Valley, CA
  • Average UV index in August: 6

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

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Average cloud cover in August
Moreno Valley, CA

Average cloud cover in August - Moreno Valley, CA
  • Average cloud cover in August: 5

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

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Average visibility in August
Moreno Valley, CA

Average visibility in August - Moreno Valley, 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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