September weather forecast and climate
El Centro, CA

Weather in September

The first month of the autumn, September, is also a sweltering month in El Centro, California, with average temperature ranging between max 99.1°F (37.3°C) and min 79.9°F (26.6°C).

Temperature

In September, the average high-temperature slightly decreases, from a blistering 106.2°F (41.2°C) in August, to a torrid 99.1°F (37.3°C). In September, the average low-temperature is 79.9°F (26.6°C).

Humidity

In El Centro, the average relative humidity in September is 26%.

Rainfall

The wettest months are March, April, July through September and December, with an average 0.08" (2mm) of rainfall.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In El Centro, the average sunshine is 10.2h.

UV index

In September, the average daily maximum UV index in El Centro is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 8 in September transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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. 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 El Centro?

In September, the average high-temperature is 99.1°F (37.3°C), and the average low-temperature is 79.9°F (26.6°C).

What is the average humidity in September in El Centro?

The average relative humidity in September in El Centro is 26%.

How much does it rain in El Centro in September?

In El Centro, California, in September, it is raining for 1.9 days, with typically 0.08" (2mm) of accumulated precipitation.

What is the wettest month in El Centro?

The wettest months in El Centro are March, April, July through September and December, with an average 0.08" (2mm) of rainfall.

What is the average length of the day in September in El Centro?

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

How many hours of sunshine does El Centro have in September?

In El Centro, the average sunshine in September is 10.2h.

How high is the UV index in September in El Centro?

The average daily maximum UV index in September in El Centro, California, is 8. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to the UV radiation.

Average temperature in September
El Centro, CA

Average temperature in September - El Centro, CA
  • Average high temperature in September: 99.1°F

The warmest month (with the highest average high temperature) is July (106.7°F).
The month with the lowest average high temperature is December (66.4°F).

  • Average low temperature in September: 79.9°F

The month with the highest average low temperature is August (85.5°F).
The coldest month (with the lowest average low temperature) is January (49.8°F).

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Average pressure in September
El Centro, CA

Average pressure in September - El Centro, CA
  • Average pressure in September: 29.81"

The month with the highest atmospheric pressure is January (30.08").
The month with the lowest atmospheric pressure is June (29.78").

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Average wind speed in September
El Centro, CA

Average wind speed in September - El Centro, CA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

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Average humidity in September
El Centro, CA

Average humidity in September - El Centro, CA
  • Average humidity in September: 26%

The month with the highest relative humidity is December (40%).
The month with the lowest relative humidity is June (21%).

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Average rainfall in September
El Centro, CA

Average rainfall in September - El Centro, CA
  • Average rainfall in September: 0.08"

The wettest months (with the highest rainfall) are March, April, July, August, September and December (0.08").
The driest months (with the least rainfall) are May and June (0").

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Average rainfall days in September
El Centro, CA

Average rainfall days in September - El Centro, CA
  • Average rainfall days in September: 1.9 days

The month with the highest number of rainy days is July (2.8 days).
The month with the least rainy days is May (0.3 days).

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Average daylight in September /
Average sunshine in September
El Centro, CA

Average daylight in September / Average sunshine in September - El Centro, CA
  • Average daylight in September: 12.4h

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

  • Average sunshine in September: 10.2h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7.1h).

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Average sunshine days in September
El Centro, CA

Average sunshine days in September - El Centro, CA
  • Average sunshine days in September: 26.6 days

The month with the most sunshine days is May (30.4 days).
The month with the least sunshine days is August (25.8 days).

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Average UV index in September
El Centro, CA

Average UV index in September - El Centro, CA
  • Average UV index in September: 8

Months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in September
El Centro, CA

Average cloud cover in September - El Centro, 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).

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Average visibility in September
El Centro, CA

Average visibility in September - El Centro, 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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