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 onset of September manifests an average high-temperature of a still warm 83.8°F (28.8°C), demonstrating a minor variation from the preceding month. In Barona, the expected average low-temperature for September is a refreshing 63°F (17.2°C).Heat index
Throughout September, the heat index is estimated at a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
The average relative humidity in September is 57%.Rainfall
In Barona, California, in September, during 4.7 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Barona, during the entire year, the rain falls for 60.3 days and collects up to 8.43" (214mm) of precipitation.Daylight
In Barona, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:22 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is 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 in Barona?
How many hours of sunshine does Barona have in September?
What is the month with the highest UV index in Barona?
What is the UV index reading in September in Barona?
Average temperature in September
Barona, CA
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (63.3°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in September
Barona, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Barona, CA
- Average wind speed in September: 4mph
The windiest months (with the highest average wind speed) are April and May (5.3mph).
The calmest month (with the lowest average wind speed) is September (4mph).
Average humidity in September
Barona, CA
- Average humidity in September: 57%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Barona, CA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Barona, CA
- Average rainfall days in September: 4.7 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is June (1.8 days).
Average daylight in September /
Average sunshine in September
Barona, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Barona, CA
- Average sunshine days in September: 22 days
The month with the most sunshine days is June (27.4 days).
The month with the least sunshine days is July (19.9 days).
Average UV index in September
Barona, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Barona, CA
- Average cloud cover in September: 9
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Barona, 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).
Barona, California, USA
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