September weather forecast
Emeryville, CA

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Colorful sky at dusk, with stunning water reflection of numerous boats, docked on the San Francisco Bay in Emeryville, California
Colorful sky at dusk, with stunning water reflection of numerous boats, docked on the San Francisco Bay in Emeryville, California

Weather in September

The first month of the autumn, September, is still a warm month in Emeryville, California, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 56.8°F (13.8°C).

Temperature

September, known for its average high temperature of 76.6°F (24.8°C) and an average low temperature of 56.8°F (13.8°C), is the warmest month.

Humidity

In Emeryville, the average relative humidity in September is 65%.

Rainfall

The months with the least rainfall in Emeryville are June through September Rain falls for 2.3 days and accumulates 0.08" (2mm) of rain.

Daylight

The average length of the day in September in Emeryville is 12h and 25min.
On the first day of September in Emeryville, sunrise is at 6:39 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

Sunshine

The average sunshine in September is 11h.

UV index

The months with the highest UV index in Emeryville are April through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the warmest month in Emeryville?

September, with an average high of 76.6°F (24.8°C) and a low of 56.8°F (13.8°C), signifies the warmest month of the year.

What are September temperatures in Emeryville?

The high-temperature, in September, in Emeryville, is 76.6°F (24.8°C), while the low-temperature averages to 56.8°F (13.8°C).

What is the average humidity in September in Emeryville?

In Emeryville, the average relative humidity in September is 65%.

What is the driest month in Emeryville?

The months with the least rainfall in Emeryville, California, are June through September Rain falls for 2.3 days and accumulates 0.08" (2mm) of rain.

How much does it rain in Emeryville in September?

In Emeryville, in September, during 2.3 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.

How many hours of daylight does Emeryville have in September?

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

What time are sunrise and sunset in September in Emeryville?

In September, on the first day of the month, sunrise is at 6:39 am and sunset at 7:37 pm. On the last day of the month, in Emeryville, California, sunrise is at 7:04 am and sunset at 6:53 pm PDT.

How long on average sun shines in September in Emeryville?

The average sunshine duration in September in Emeryville is 11h.

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

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

What is the UV index intensity in September in Emeryville?

In September, the average daily maximum UV index is 5. A UV Index value 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
Emeryville, CA

Average temperature in September - Emeryville, CA
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in September
Emeryville, CA

Average pressure in September - Emeryville, 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
Emeryville, CA

Average wind speed in September - Emeryville, CA
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).

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Average humidity in September
Emeryville, CA

Average humidity in September - Emeryville, CA
  • Average humidity in September: 65%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in September
Emeryville, CA

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

The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").

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Average rainfall days in September
Emeryville, CA

Average rainfall days in September - Emeryville, CA
  • Average rainfall days in September: 2.3 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Emeryville, CA

Average sunshine days in September - Emeryville, CA
  • Average sunshine days in September: 24.9 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).

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Average UV index in September
Emeryville, CA

Average UV index in September - Emeryville, 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
Emeryville, CA

Average cloud cover in September - Emeryville, CA
  • Average cloud cover in September: 13

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in September
Emeryville, CA

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

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