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

September 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
September is the rainiest month in Yuma and an extension of the summer season with the average temperatures in the hot zone of 75.9°F (24.4°C) to 102°F (38.9°C). Most days are above 90°F (32.2°C), while nights register over 60.1°F (15.6°C).
Winds from the Gulf of Mexico in the southeast carry moisture as the month receives an average of 0.5" (12.7mm) of rain. Overall, the days are hot, a combination of sunny and cloudy, with average humidity in the range of 40% to 50%.
September does not find many visitors to Yuma due to unfavorable and hot weather conditions.

What is the temperature in September in Yuma?

In Yuma, Arizona, in September, the average high-temperature is 101.3°F (38.5°C), and the average low-temperature is 76.5°F (24.7°C).

How many days does it rain in September in Yuma?

In Yuma, Arizona, in September, it is raining for 1.2 days, with typically 0.5" (13.5mm) of accumulated precipitation.

What is the wettest month in Yuma?

September is the month with the most rainfall in Yuma. Rain falls for 1.2 days and accumulates 0.5" (13.5mm) of precipitation.

How many hours of daylight does Yuma have in September?

In Yuma, the average length of the day in September is 12.4h.

How many hours of sunshine does Yuma have in September?

In September, the average sunshine in Yuma is 11.4h.

What is the UV index intensity in September in Yuma?

In September, the average daily maximum UV index in Yuma is 9. A UV Index reading of 8 to 10 represents a very high health threat from unprotected exposure to the UV radiation.
Average temperature in September - Yuma, AZ
  • Average high temperature in September: 101.3°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).

  • Average low temperature in September: 76.5°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).

Average rainfall in September - Yuma, AZ
  • Average rainfall in September: 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").

Average rainfall days in September - Yuma, AZ
  • Average rainfall days in September: 1.2 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).

Average daylight in September / Average sunshine in September - Yuma, AZ
  • Average daylight in September: 12.4h

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

  • Average sunshine in September: 11.4h

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

Average UV index in September - Yuma, AZ
  • Average UV index in September: 9

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).