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 observes an average high-temperature of a still warm 83.8°F (28.8°C), marking an insignificant difference from August's 85.8°F (29.9°C). Barona experiences a steady low-temperature of 63°F (17.2°C) throughout September.Heat index
The heat index in September is calculated to be a hot 86°F (30°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in September is 57%.Rainfall
In Barona, during September, the rain falls for 4.7 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Barona, California, 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 the month, sunrise is at 6:22 am and sunset at 7:11 pm. On the last day of September, in Barona, California, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
In Barona, California, the average sunshine in September is 10.4h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index in Barona. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
How hot is it in Barona in September?
What is the average humidity in September in Barona?
How many days does it rain in September in Barona?
How many hours of daylight does Barona have in September?
What time are sunrise and sunset in September in Barona?
How many hours of sunshine does Barona have in September?
What are the months with the highest UV index in Barona?
What is the UV index intensity 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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