Emeryville
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Emeryville, CA

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

The warmest month is September, with an average high-temperature of 76.6°F (24.8°C) and an average low-temperature of 56.8°F (13.8°C).

Humidity

The average relative humidity in Emeryville is 65%.

Rainfall

June through September are months with the least rain when the rain falls for 2.3 days and typically aggregates up to 0.08" (2mm) of rain.

Daylight

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

Sunshine

The average sunshine in Emeryville is 11h.

UV index

April through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the warmest month in Emeryville?

With an average high-temperature of 76.6°F (24.8°C) and an average low-temperature of 56.8°F (13.8°C), September is the warmest month in Emeryville.

What is the temperature in September in Emeryville?

The average high-temperature, in September, in Emeryville, California, is 76.6°F (24.8°C), while the average low-temperature is 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%.

How much does it rain in Emeryville in September?

In Emeryville, during September, the rain falls for 2.3 days and regularly aggregates up to 0.08" (2mm) of precipitation.

What is the driest month in Emeryville?

June through September are months with the least rain in Emeryville, California, when the rain falls for 2.3 days and typically aggregates up to 0.08" (2mm) of rain.

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

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

How long on average sun shines in September in Emeryville?

The average sunshine in September is 11h.

When is the highest UV index in Emeryville?

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

What is the UV index reading in September in Emeryville?

In Emeryville, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
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).

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%).

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

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

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 lowest number of rainy days is August (1.5 days).

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

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 11h

The month with most sunshine is July (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 5.8h).

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

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