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
The arrival of September brings an average high-temperature of a still moderately hot 81.1°F (27.3°C), subtly diverging from August's 82°F (27.8°C). In the month of September, Bellflower's average low-temperature falls to a refreshing 64.8°F (18.2°C).Heat index
The heat index value for September is appraised at 82.4°F (28°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In September, the average relative humidity in Bellflower is 60%.Rainfall
In Bellflower, in September, during 3.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. In Bellflower, during the entire year, the rain falls for 53.4 days and collects up to 8.43" (214mm) of precipitation.Daylight
In September, the average length of the day in Bellflower is 12h and 22min.On the first day of September in Bellflower, California, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:37 pm PDT.
Sunshine
In September, the average sunshine in Bellflower, California, is 10.6h.UV index
The months with the highest UV index in Bellflower are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 during September leads to these advisories:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the usual temperature for Bellflower in September?
What is the average humidity in September in Bellflower?
How many days does it rain in September in Bellflower?
What is the average length of the day in September in Bellflower?
When are sunrise and sunset in September in Bellflower?
How long on average sun shines in September in Bellflower?
What is the month with the highest UV index in Bellflower?
What is the UV index intensity in September in Bellflower?
Average temperature in September
Bellflower, CA
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (64.2°F).
- Average low temperature in September: 64.8°F
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.3°F).
Average pressure in September
Bellflower, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in September
Bellflower, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).
Average humidity in September
Bellflower, CA
- Average humidity in September: 60%
The month with the highest relative humidity is June (68%).
The month with the lowest relative humidity is November (53%).
Average rainfall in September
Bellflower, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Bellflower, CA
- Average rainfall days in September: 3.1 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).
Average daylight in September /
Average sunshine in September
Bellflower, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Bellflower, CA
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in September
Bellflower, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover in September
Bellflower, CA
- Average cloud cover in September: 9
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Bellflower, 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).
Bellflower, California, USA
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