September weather forecast and climate
Rancho Mirage, CA

Weather in September

The first month of the autumn, September, is still a tropical month in Rancho Mirage, California, with average temperature fluctuating between 86.9°F (30.5°C) and 67.6°F (19.8°C).

Temperature

In September, the average high-temperature marginally drops, from a tropical 93.7°F (34.3°C) in August, to a still hot 86.9°F (30.5°C). The average low-temperature, in Rancho Mirage, is 67.6°F (19.8°C).

Humidity

In Rancho Mirage, the average relative humidity in September is 32%.

Rainfall

In Rancho Mirage, during September, the rain falls for 6.1 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Rancho Mirage, during the entire year, the rain falls for 54 days and collects up to 6.57" (167mm) of precipitation.

Daylight

In Rancho Mirage, the average length of the day is 12.4h.

Sunshine

In Rancho Mirage, the average sunshine is 10.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Rancho Mirage?

In Rancho Mirage, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 67.6°F (19.8°C).

What is the average humidity in September in Rancho Mirage?

The average relative humidity in September in Rancho Mirage, California, is 32%.

How many days does it rain in September in Rancho Mirage?

In Rancho Mirage, California, in September, it is raining for 6.1 days, with typically 0.55" (14mm) of accumulated precipitation.

What is the average length of the day in September in Rancho Mirage?

In Rancho Mirage, California, the average length of the day in September is 12.4h.

How long on average sun shines in September in Rancho Mirage?

In Rancho Mirage, the average sunshine in September is 10.5h.

What is the UV index intensity in September in Rancho Mirage?

The average daily maximum UV index in September in Rancho Mirage, California, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Rancho Mirage, CA

Average temperature in September - Rancho Mirage, CA
  • Average high temperature in September: 86.9°F

The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is December (58.1°F).

  • Average low temperature in September: 67.6°F

The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure in September
Rancho Mirage, CA

Average pressure in September - Rancho Mirage, CA
  • Average pressure in September: 29.84"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.81").

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Average wind speed in September
Rancho Mirage, CA

Average wind speed in September - Rancho Mirage, CA
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is May (8.8mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

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Average humidity in September
Rancho Mirage, CA

Average humidity in September - Rancho Mirage, CA
  • Average humidity in September: 32%

The month with the highest relative humidity is December (47%).
Months with the lowest relative humidity are June, July and August (29%).

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Average rainfall in September
Rancho Mirage, CA

Average rainfall in September - Rancho Mirage, CA
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is July (1.14").
The driest months (with the least rainfall) are May and June (0.12").

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Average rainfall days in September
Rancho Mirage, CA

Average rainfall days in September - Rancho Mirage, CA
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is June (1.5 days).

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Average daylight in September /
Average sunshine in September
Rancho Mirage, CA

Average daylight in September / Average sunshine in September - Rancho Mirage, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 10.5h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in September
Rancho Mirage, CA

Average sunshine days in September - Rancho Mirage, CA
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.1 days).

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Average UV index in September
Rancho Mirage, CA

Average UV index in September - Rancho Mirage, CA
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Rancho Mirage, CA

Average cloud cover in September - Rancho Mirage, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in September
Rancho Mirage, CA

Average visibility in September - Rancho Mirage, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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