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 transition into September involves a small decrease in the average high-temperature, dipping slightly from a fiery hot 95°F (35°C) in August to a tropical 88.5°F (31.4°C). During the month of September, the nighttime temperature falls to an average of 71.6°F (22°C).Humidity
In September, the average relative humidity in Indio is 31%.Rainfall
In Indio, in September, during 4.9 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 43.4 rainfall days, and 4.21" (107mm) of precipitation is accumulated.Daylight
In Indio, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:19 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:30 pm PDT.
Sunshine
In Indio, the average sunshine in September is 10.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Indio have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Indio, CA
- Average high temperature in September: 88.5°F
The warmest month (with the highest average high temperature) is July (95.7°F).
The month with the lowest average high temperature is December (59.7°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is December (45.9°F).
Average pressure in September
Indio, CA
- Average pressure in September: 29.83"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Indio, CA
- Average wind speed in September: 6.4mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).
Average humidity in September
Indio, CA
- Average humidity in September: 31%
The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (27%).
Average rainfall in September
Indio, CA
- Average rainfall in September: 0.39"
The wettest months (with the highest rainfall) are July and August (0.63").
The driest months (with the least rainfall) are May and June (0.08").
Average rainfall days in September
Indio, CA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is July (5.9 days).
The month with the least rainy days is June (0.9 days).
Average daylight in September /
Average sunshine in September
Indio, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 3min
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 6min).
Average sunshine days in September
Indio, CA
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (20.8 days).
Average UV index in September
Indio, CA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Indio, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 4).
Average visibility in September
Indio, CA
- 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).
Indio, California, USA
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