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's weather displays an average high-temperature of a moderately hot 84.2°F (29°C), slightly varied from August's 86.9°F (30.5°C). With a notable disparity from daily peak temperatures, the average low-temperature settles at a moderate 60.1°F (15.6°C) throughout September.Heat index
In September, the average heat index is calculated to be 84.2°F (29°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
September is the least humid month, with an average relative humidity of 47%.Rainfall
In San Ardo, during September, the rain falls for 1.5 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 55.2 rainfall days, and 9.06" (230mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:36 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:48 pm PDT.
Sunshine
The average sunshine in September is 11.4h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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 least humid month?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does San Ardo have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
San Ardo, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is August (60.8°F).
The coldest months (with the lowest average low temperature) are February and December (42.8°F).
Average pressure in September
San Ardo, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.91"Hg).
Average wind speed in September
San Ardo, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is May (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
San Ardo, CA
- Average humidity in September: 47%
The month with the highest relative humidity is February (68%).
The month with the lowest relative humidity is September (47%).
Average rainfall in September
San Ardo, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
San Ardo, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
San Ardo, 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 48min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).
Average sunshine days in September
San Ardo, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in September
San Ardo, 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 3).
Average cloud cover in September
San Ardo, CA
- Average cloud cover in September: 5
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in September
San Ardo, 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).
San Ardo, California, USA
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