Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September in Yuma results in a small decrease in the average high-temperature, moderately receding from a blisteringly hot 105.1°F in August to a sweltering 99.5°F. September brings an average low-temperature of 81°F to Yuma.Humidity
The average relative humidity in September in Yuma is 29%.Rainfall
The months with the most rainfall are July and September, with an average 0.39" of precipitation.Daylight
In Yuma, the average length of the day in September is 12h and 22min.On the first day of September in Yuma, sunrise is at 6:13 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 6:24 pm MST.
Sunshine
In Yuma, the average sunshine in September is 9.8h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 8 during September morphs into the following directions:
Emphasize protection. Neglecting it can lead to swift damage to the skin and eyes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
How hot is it in Yuma in September?
What is the average humidity in September in Yuma?
What is the wettest month in Yuma?
How many days does it rain in September in Yuma?
What is the average length of the day in September in Yuma?
When is the sunrise / sunset in September in Yuma?
How long on average sun shines in September in Yuma?
What is the month with the highest UV index in Yuma?
How high is the UV index in September in Yuma?
Average temperature in September
Yuma, AZ
- Average high temperature in September: 99.5°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 September: 81°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 September
Yuma, AZ
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).
Average wind speed in September
Yuma, AZ
- Average wind speed in September: 6.9mph
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 September
Yuma, AZ
- Average humidity in September: 29%
The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (22%).
Average rainfall in September
Yuma, AZ
- Average rainfall in September: 0.39"
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 September
Yuma, AZ
- Average rainfall days in September: 4.6 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 September /
Average sunshine in September
Yuma, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
Yuma, AZ
- Average sunshine days in September: 23 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 September
Yuma, AZ
- Average UV index in September: 8
The months with the highest UV index are June, July, August and September (UV index 8).
The months with the lowest UV index are November and December (UV index 4).
Average cloud cover in September
Yuma, AZ
- Average cloud cover in September: 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 September
Yuma, AZ
- Average visibility in September: 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).
Yuma, Arizona, USA
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