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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a fiery hot 100°F (37.8°C) in August to a hot 93.6°F (34.2°C). Biola's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 63.5°F (17.5°C) in September.Humidity
The average relative humidity in September is 33%.Rainfall
In Biola, during September, the rain falls for 1.5 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Biola, during the entire year, the rain falls for 47.3 days and collects up to 5.67" (144mm) of precipitation.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:31 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:44 pm PDT.
Sunshine
In Biola, the average sunshine in September is 11.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September in Biola?
Average temperature in September
Biola, CA
- Average high temperature in September: 93.6°F
The warmest month (with the highest average high temperature) is July (102°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).
Average pressure in September
Biola, 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 (29.9"Hg).
Average wind speed in September
Biola, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (5mph).
Average humidity in September
Biola, CA
- Average humidity in September: 33%
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (29%).
Average rainfall in September
Biola, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Biola, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is August (1 days).
Average daylight in September /
Average sunshine in September
Biola, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Biola, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in September
Biola, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Biola, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in September
Biola, 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).
Biola, California, USA
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