August weather forecastRiviera, AZ
August
Weather in August
August, the last month of the summer in Riviera, is also a sweltering month, with an average temperature fluctuating between 81.5°F (27.5°C) and 100°F (37.8°C).Temperature
August's average high-temperature stands at a still sweltering 100°F (37.8°C), showing little deviation from July's 100.8°F (38.2°C). Riviera's average low-temperature in the month of August is recorded at a moderately hot 81.5°F (27.5°C).Humidity
In Riviera, the average relative humidity in August is 24%.Rainfall
In Riviera, in August, during 4.2 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 44 rainfall days, and 4.21" (107mm) of precipitation is accumulated.Snowfall
In Riviera, snow does not fall in January through November.Daylight
In August, the average length of the day is 13h and 26min.On the first day of August in Riviera, sunrise is at 5:48 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 7:06 pm MST.
Sunshine
The average sunshine in August is 11.2h.UV index
June through August, with an average maximum UV index of 8, are months with the highest UV index in Riviera. A UV Index estimate of 8 to 10 represents a very high threat to health from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 8 in August transforms into the following instructions:
Be vigilant. Without due care, eyes and skin can be harmed in no time. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Riviera, AZ
- Average high temperature in August: 100°F
The warmest month (with the highest average high temperature) is July (100.8°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in August: 81.5°F
The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is December (43.5°F).
Average pressure in August
Riviera, AZ
- Average pressure in August: 29.82"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).
Average wind speed in August
Riviera, AZ
- Average wind speed in August: 8.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is September (7.6mph).
Average humidity in August
Riviera, AZ
- Average humidity in August: 24%
The month with the highest relative humidity is January (42%).
The month with the lowest relative humidity is June (14%).
Average rainfall in August
Riviera, AZ
- Average rainfall in August: 0.31"
The wettest month (with the highest rainfall) is December (0.67").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
Riviera, AZ
- Average rainfall days in August: 4.2 days
The month with the highest number of rainy days is July (5.9 days).
The month with the least rainy days is June (1.1 days).
Average snowfall days in August
Riviera, AZ
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Riviera, AZ
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 11h and 12min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in August
Riviera, AZ
- Average sunshine days in August: 22.1 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in August
Riviera, AZ
- Average UV index in August: 8
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
Riviera, AZ
- Average cloud cover in August: 6
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in August
Riviera, AZ
- 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).





