September weather forecast
Santa Clarita, CA

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

Weather in September

September, the first month of the autumn in Santa Clarita, is still a warm month, 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

Santa Clarita measures an average high-temperature of a moderately hot 85.1°F (29.5°C) in September, nearly consistent with the preceding month. The nighttime temperature during September exhibits a clear drop from daytime highs, settling at an enjoyable 61.7°F (16.5°C).

Heat index

September's heat index is evaluated at a tropical 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

The average relative humidity in September in Santa Clarita is 45%.

Rainfall

In September, in Santa Clarita, California, the rain falls for 1.5 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. Throughout the year, there are 37.3 rainfall days, and 6.1" (155mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Santa Clarita is 12h and 22min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:19 pm. On the last day of September, in Santa Clarita, California, sunrise is at 6:48 am and sunset at 6:39 pm PDT.

Sunshine

The average sunshine in September is 10.9h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Santa Clarita. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot does it get in Santa Clarita in September?

The high-temperature, in September, in Santa Clarita, records 85.1°F (29.5°C), while the low-temperature is 61.7°F (16.5°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the average humidity in September in Santa Clarita?

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

How much does it rain in Santa Clarita in September?

In Santa Clarita, California, in September, during 1.5 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.

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

In Santa Clarita, California, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Santa Clarita?

On the first day of September in Santa Clarita, California, sunrise is at 6:28 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:39 pm PDT.

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

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

What is the month with the highest UV index in Santa Clarita?

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

How high is the UV index in September in Santa Clarita?

In September, the average daily maximum UV index in Santa Clarita is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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: 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: 9h and 54min).

  • Average sunshine in September: 10h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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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

The 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

The 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

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).

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Santa Clarita, California, USA

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