Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's presence records an average high-temperature of a still pleasant 68.9°F (20.5°C), closely mirroring August's climate. Bayside, during September nights, observes an average temperature of 51.6°F (10.9°C).Humidity
In September, the average relative humidity in Bayside is 76%.Rainfall
In Bayside, in September, during 4.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Bayside, 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 12h and 27min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:47 pm. On the last day of September, in Bayside, sunrise is at 7:12 am and sunset at 6:59 pm PDT.
Sunshine
In Bayside, the average sunshine in September is 10.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are September temperatures in Bayside?
What is the average humidity in September in Bayside?
How many days does it rain in September in Bayside?
When it does not snow in Bayside?
How many hours of daylight does Bayside have in September?
When are sunrise and sunset in September in Bayside?
How long on average sun shines in September in Bayside?
How high is the UV index in September in Bayside?
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).
Average pressure in September
Bayside, CA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
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).
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%).
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").
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).
Average snowfall in September
Bayside, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
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).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Bayside, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
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).
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).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
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).
Average visibility in September
Bayside, CA
- Average visibility in September: 6mi
The 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).
Bayside, California, USA
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