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 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 denotes a minimal variation in the average high-temperature to a warm 84.9°F (29.4°C) from August's 86.5°F (30.3°C). Bay Point in September observes a substantial swing from the daily highs, with average nighttime temperatures of 57.7°F (14.3°C).Heat index
September's heat index is computed to be a tropical 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.The standards for the heat index are set for locations in shade and under light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
The least humid month in Bay Point is September, with an average relative humidity of 53%.Rainfall
Months with rainfall are January through May, September through December. September is the first month it rains. Throughout September, in the average 1 rainfall days, it receives 0.04" (1mm) of precipitation. In Bay Point, during the entire year, the rain falls for 37.4 days and collects up to 2.44" (62mm) of precipitation.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:38 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September in Bay Point is 11.2h.UV index
In Bay Point, California, the average daily maximum UV index in September is 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: A daily maximum UV index of 5 in September translates into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Bay Point in September?
What is the least humid month in Bay Point?
What is the average humidity in September in Bay Point?
When does it start to rain in Bay Point?
What is the average length of the day in September in Bay Point?
When is the sunrise / sunset in September in Bay Point?
How long on average sun shines in September in Bay Point?
What is the UV index reading in September in Bay Point?
Average temperature in September
Bay Point, CA
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Bay Point, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Bay Point, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).
Average humidity in September
Bay Point, CA
- Average humidity in September: 53%
The months with the highest relative humidity are January and March (73%).
The month with the lowest relative humidity is September (53%).
Average rainfall in September
Bay Point, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is February (0.59").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in September
Bay Point, CA
- Average rainfall days in September: 1 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is August (0.5 days).
Average daylight in September /
Average sunshine in September
Bay Point, 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: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Bay Point, CA
- Average sunshine days in September: 28.8 days
The months with the most sunshine days are July and August (30.3 days).
The month with the least sunshine days is March (21.8 days).
Average UV index in September
Bay Point, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Bay Point, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in September
Bay Point, 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).
Bay Point, California, USA
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