September weather forecast and climate
Bayside, CA

Weather in September

The first month of the autumn, September, is also an agreeable month in Bayside, California, with average temperature ranging between max 68.9°F (20.5°C) and min 51.6°F (10.9°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still agreeable 68.9°F (20.5°C). In Bayside, the average low-temperature is 51.6°F (10.9°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

In September, the rain falls for 4.5 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. In Bayside, California, during the entire year, the rain falls for 114.7 days and collects up to 29.37" (746mm) of precipitation.

Snowfall

In Bayside snow does not fall in January, March through December.

Daylight

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

Sunshine

The average sunshine in Bayside is 10.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 transform into the following instructions:
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.
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FAQ

What is the temperature in September in Bayside?

In Bayside, in September, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 51.6°F (10.9°C).

What is the average humidity in September in Bayside?

In September, the average relative humidity in Bayside, California, is 76%.

How much does it rain in Bayside in September?

In Bayside, in September, it is raining for 4.5 days, with typically 0.79" (20mm) of accumulated precipitation.

When it does not snow in Bayside?

January, March through December are months without snowfall in Bayside, California.

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

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

How many hours of sunshine does Bayside have in September?

The average sunshine in September in Bayside, California, is 10.3h.

What is the UV index intensity in September in Bayside?

In Bayside, California, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Bayside, CA

Average temperature in September - Bayside, CA
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in September: 51.6°F

The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (41.9°F).

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Average pressure in September
Bayside, CA

Average pressure in September - Bayside, CA
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is August (29.96").

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Average wind speed in September
Bayside, CA

Average wind speed in September - Bayside, CA
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Bayside, CA

Average humidity in September - Bayside, CA
  • Average humidity in September: 76%

The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in September
Bayside, CA

Average rainfall in September - Bayside, CA
  • Average rainfall in September: 0.79"

The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in September
Bayside, CA

Average rainfall days in September - Bayside, CA
  • Average rainfall days in September: 4.5 days

The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (2.1 days).

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Average snowfall in September
Bayside, CA

Average snowfall in September - Bayside, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.39").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Bayside, CA

Average snowfall days in September - Bayside, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 10.3h

The month with the most sunshine is July (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 5.2h).

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Average sunshine days in September
Bayside, CA

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

The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in September
Bayside, CA

Average UV index in September - Bayside, CA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average cloud cover in September
Bayside, CA

Average cloud cover in September - Bayside, CA
  • Average cloud cover in September: 18

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in September
Bayside, CA

Average visibility in September - Bayside, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

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