Indio Weather in September

What's the weather like in Indio (California) in September 2025?

The climate in Indio during September can be summarized as very hot and very dry.

September is in the fall / autumn in Indio and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 37°C (99°F), whilst at night 21°C (69°F) is normal.

Indio weather averages (imperial / metric)
Daytime temperature	37.1°C 98.7°F
Nightly temperature	20.6°C 69°F
Average temperature	28.8°C 83.8°F
Daily sunshine	10.8 hrs
Avg rainfall	6 mm 0.2 ins
Rainy days	1 days
Sea temperature	20.4°C 68.7°F
Humidity	53%
Windspeed	13.3kph 8 mph

On average September is the 6th driest month of the year in Indio with around 6mm 0.2 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 10.8 hours of sunshine per day.

September temperatures in Indio

September rainfall

September hourly sunshine

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Indio in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Indio weather stats

Indio weather statistics
Hottest month:	July	40.7°C 105.3°F
Driest month:	June	1mm 0ins
Sunniest month:	August	12hrs
Coldest month:	January	19.9°C 67.8°F
Wettest month:	January	20mm 0.8ins

Map showing location of Indio (33.72058, -116.21556)