Arizona, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and Climate
Yuma, AZ

Aerial view of the Arizona/California border with the Colorado River in Yuma, Arizona
Aerial view of the Arizona/California border with the Colorado River in Yuma, Arizona
August is hot in Yuma with average temperatures in the 82°F (27.8°C) to 107°F (41.7°C). It is the summer monsoon time and usually cloudier and wetter than the usual weather conditions.
Rainfall is to the tune of 0.5" (12.7mm) and rarely goes over an inch even during an occasional rainstorm in an odd year. A rare hurricane may visit Yuma with its origin in the Pacific Ocean or the Gulf of California. Mornings and evenings are good times to be near the water but avoid midday swims.
  • The average high temperature in August: 106.2°F

The warmest month (with the highest average high temperature) is July (106.8°F).
The month with the lowest average high temperature is December (68.3°F).

  • The average low temperature in August: 82.3°F

The month with the highest average low temperature is August (82.3°F).
The coldest month (with the lowest average low temperature) is December (46.6°F).

  • The average rainfall in August: 0.5"

Wettest months (with the highest rainfall) are August, September and December (0.5").
Driest months (with the lowest rainfall) are May and June (0").

  • The average rainfall days in August: 2.3 days

Months with the highest number of rainy days are January and August (2.3 days).
The month with the lowest number of rainy days is June (0.2 days).

  • The average daylight in August: 13h

Months with the longest days are May, June and July (Average daylight: 14h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in August: 12.1h

The month with most sunshine is June (Average sunshine: 13.8h).
The month with least sunshine is December (Average sunshine: 8.2h).

  • The average UV index in August: 10

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).