August weather forecast and climate
Yuma, AZ

Arizona/California border with the Colorado River in Yuma, Arizona
Arizona/California border with the Colorado River in Yuma, Arizona
The last month of the summer, August, is also a blistering month in Yuma, Arizona, with average temperature fluctuating between 105.1°F (40.6°C) and 86.4°F (30.2°C).

Temperature

In Yuma, the average high-temperature in August is essentially the same as in July - a still blistering 105.1°F (40.6°C). In August, in Yuma, the average low-temperature is 86.4°F (30.2°C).

Humidity

The average relative humidity in August is 31%.

Rainfall

In Yuma, it is raining for 4.1 days, with typically 0.28" (7mm) of accumulated precipitation. Throughout the year, in Yuma, Arizona, there are 31.6 rainfall days, and 2.8" (71mm) of precipitation is accumulated.

Daylight

In August, the average length of the day in Yuma is 13.3h.

Sunshine

The average sunshine in August is 10.7h.

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 8 interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.

What is the temperature in August in Yuma?

The average high-temperature, in August, in Yuma, is 105.1°F (40.6°C), while the average low-temperature is 86.4°F (30.2°C).

What is the average humidity in August in Yuma?

In Yuma, Arizona, the average relative humidity in August is 31%.

How many days does it rain in August in Yuma?

In Yuma, during August, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation.

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

In Yuma, the average length of the day in August is 13.3h.

How long on average sun shines in August in Yuma?

In Yuma, the average sunshine in August is 10.7h.

When is the highest UV index in Yuma?

Months with the highest UV index in Yuma, Arizona, are June through September, with an average maximum UV index of 8.

How high is the UV index in August in Yuma?

In August, the average daily maximum UV index in Yuma, Arizona, is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to the UV radiation.
Average temperature in August - Yuma, AZ
  • Average high temperature in August: 105.1°F

The warmest month (with the highest average high temperature) is July (105.3°F).
The month with the lowest average high temperature is December (66°F).

  • Average low temperature in August: 86.4°F

The month with the highest average low temperature is August (86.4°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).

Average pressure in August - Yuma, AZ
  • Average pressure in August: 29.77"

The month with the highest atmospheric pressure is January (30.07").
The month with the lowest atmospheric pressure is June (29.74").

Average wind speed in August - Yuma, AZ
  • Average wind speed in August: 8mph

The windiest months (with the highest average wind speed) are April and July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.6mph).

Average humidity in August - Yuma, AZ
  • Average humidity in August: 31%

The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (22%).

Average rainfall in August - Yuma, AZ
  • Average rainfall in August: 0.28"

The wettest months (with the highest rainfall) are July and September (0.39").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in August - Yuma, AZ
  • Average rainfall days in August: 4.1 days

The month with the highest number of rainy days is July (5.8 days).
The month with the least rainy days is May (0.8 days).

Average daylight in August / Average sunshine in August - Yuma, AZ
  • Average daylight in August: 13.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 10.7h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7.2h).

Average sunshine days in August - Yuma, AZ
  • Average sunshine days in August: 22.8 days

The month with the most sunshine days is May (30.2 days).
The month with the least sunshine days is July (22.1 days).

Average UV index in August - Yuma, AZ
  • Average UV index in August: 8

Months with the highest UV index are June, July, August and September (UV index 8).
Months with the lowest UV index are November and December (UV index 4).

Average cloud cover in August - Yuma, AZ
  • Average cloud cover in August: 8

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in August - Yuma, AZ
  • 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).