September weather forecast and climate
Santa Clarita, CA

A beautiful landscape in Santa Clarita, California
A beautiful landscape in Santa Clarita, California

Weather in September

The first month of the autumn, September, is also a moderately hot month in Santa Clarita, California, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 85.1°F (29.5°C).

Temperature

In Santa Clarita, California, the average high-temperature is essentially the same as in August - a moderately hot 85.1°F (29.5°C). The average low-temperature,, is 61.7°F (16.5°C).

Heat index

In September, the average heat index is computed to be 85.5°F (29.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity in Santa Clarita, California, is 45%.

Rainfall

In Santa Clarita, in September, during 1.5 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Santa Clarita, during the entire year, the rain falls for 37.3 days and collects up to 6.1" (155mm) of precipitation.

Daylight

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

Sunshine

In September, the average sunshine in Santa Clarita is 10.9h.

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Santa Clarita?

The average high-temperature, in September, in Santa Clarita, is 85.1°F (29.5°C), while the average low-temperature is 61.7°F (16.5°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 85.5°F (29.7°C).

What is the average humidity in September in Santa Clarita?

In September, the average relative humidity in Santa Clarita, California, is 45%.

How many days does it rain in September in Santa Clarita?

In September, the rain falls for 1.5 days. Throughout September, 0.08" (2mm) of precipitation is accumulated.

How many hours of daylight does Santa Clarita have in September?

In September, the average length of the day in Santa Clarita, California, is 12.4h.

How long on average sun shines in September in Santa Clarita?

In Santa Clarita, California, the average sunshine in September is 10.9h.

When is the highest UV index in Santa Clarita?

Months with the highest UV index in Santa Clarita, California, are June through September, with an average maximum UV index of 6.

What is the UV index intensity in September in Santa Clarita?

In Santa Clarita, California, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Santa Clarita, CA

Average temperature in September - Santa Clarita, CA
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is December (60.1°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).

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Average pressure in September
Santa Clarita, CA

Average pressure in September - Santa Clarita, CA
  • Average pressure in September: 29.89"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Santa Clarita, CA

Average wind speed in September - Santa Clarita, CA
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are January and December (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in September
Santa Clarita, CA

Average humidity in September - Santa Clarita, CA
  • Average humidity in September: 45%

The month with the highest relative humidity is March (56%).
The month with the lowest relative humidity is October (44%).

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Average rainfall in September
Santa Clarita, CA

Average rainfall in September - Santa Clarita, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is February (1.26").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in September
Santa Clarita, CA

Average rainfall days in September - Santa Clarita, CA
  • Average rainfall days in September: 1.5 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.5 days).

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Average daylight in September /
Average sunshine in September
Santa Clarita, CA

Average daylight in September / Average sunshine in September - Santa Clarita, 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: 10.9h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days in September
Santa Clarita, CA

Average sunshine days in September - Santa Clarita, CA
  • Average sunshine days in September: 28.3 days

The month with the most sunshine days is August (29.5 days).
The month with the least sunshine days is February (22.1 days).

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Average UV index in September
Santa Clarita, CA

Average UV index in September - Santa Clarita, CA
  • Average UV index in September: 6

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Santa Clarita, CA

Average cloud cover in September - Santa Clarita, CA
  • Average cloud cover in September: 6

Months with the most cloud cover are February and March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in September
Santa Clarita, CA

Average visibility in September - Santa Clarita, 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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