September weather forecast
Sobrante, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Sobrante, California, with an average temperature ranging between min 56.5°F (13.6°C) and max 75.7°F (24.3°C).

Temperature

Sobrante's warmest temperatures are experienced in September, with average high temperatures of 75.7°F (24.3°C) and lows of 56.5°F (13.6°C).

Humidity

In Sobrante, the average relative humidity in September is 66%.

Rainfall

June through September are months with the least rain in Sobrante when the rain falls for 2.5 days and typically aggregates up to 0.08" (2mm) of rain.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

Sunshine

In Sobrante, the average sunshine in September is 10.8h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Ensure safety - Sun damage prevention is strongly urged. It's recommended to limit sun exposure when its radiation is at its peak during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What month is the hottest in Sobrante?

Sobrante, California, experiences its average highest temperatures in September, reaching a peak of 75.7°F (24.3°C) and a minimum of 56.5°F (13.6°C).

What is the average September temperature in Sobrante?

Sobrante in September has an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 56.5°F (13.6°C).

What is the average humidity in September in Sobrante?

In Sobrante, the average relative humidity in September is 66%.

What is the driest month in Sobrante?

The months with the least rainfall are June through September Rain falls for 2.5 days and accumulates 0.08" (2mm) of rain.

How many days does it rain in September in Sobrante?

In Sobrante, California, during September, the rain falls for 2.5 days and regularly aggregates up to 0.08" (2mm) of precipitation.

What is the average length of the day in September in Sobrante?

In September, the average day length in Sobrante is 12h and 25min.

When are sunrise and sunset in September in Sobrante?

On the first day of September, sunrise is at 6:39 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

How many hours of sunshine does Sobrante have in September?

In Sobrante, California, the average sunshine duration in September is 10.8h.

What are the months with the highest UV index in Sobrante?

The months with the highest UV index are April through September, with an average maximum UV index of 5.

What is the UV index reading in September in Sobrante?

In Sobrante, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sobrante, CA

Average temperature in September - Sobrante, CA
  • Average high temperature in September: 75.7°F

The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (44.8°F).

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Average pressure in September
Sobrante, CA

Average pressure in September - Sobrante, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in September
Sobrante, CA

Average wind speed in September - Sobrante, CA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is May (7.5mph).
The calmest month (with the lowest average wind speed) is November (5.1mph).

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Average humidity in September
Sobrante, CA

Average humidity in September - Sobrante, CA
  • Average humidity in September: 66%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).

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Average rainfall in September
Sobrante, CA

Average rainfall in September - Sobrante, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is February (1.38").
The driest months (with the least rainfall) are June, July, August and September (0.08").

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Average rainfall days in September
Sobrante, CA

Average rainfall days in September - Sobrante, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (2 days).

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Average daylight in September /
Average sunshine in September
Sobrante, CA

Average daylight in September / Average sunshine in September - Sobrante, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in September
Sobrante, CA

Average sunshine days in September - Sobrante, CA
  • Average sunshine days in September: 24.5 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (18.4 days).

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Average UV index in September
Sobrante, CA

Average UV index in September - Sobrante, CA
  • Average UV index in September: 5

The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Sobrante, CA

Average cloud cover in September - Sobrante, CA
  • Average cloud cover in September: 15

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 14).

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Average visibility in September
Sobrante, CA

Average visibility in September - Sobrante, 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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Sobrante, California, USA

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