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 is marked by an average high-temperature of a warm 85.3°F (29.6°C), almost identical to the preceding month. Nightfall in September introduces a considerable dip in temperature, settling at an average of 60.3°F (15.7°C).Heat index
September's average heat index is calculated to be a hot 86°F (30°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
The least humid month is September, with an average relative humidity of 46%.Rainfall
In Shandon, in September, during 1.4 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Shandon, during the entire year, the rain falls for 55.4 days and collects up to 7.91" (201mm) of precipitation.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:34 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:46 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 in Shandon. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during September translates into these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Shandon in September?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Shandon have in September?
What are the months with the highest UV index?
How high is the UV index in September?
Average temperature in September
Shandon, CA
- Average high temperature in September: 85.3°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (57.7°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Shandon, 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, August and September (29.91"Hg).
Average wind speed in September
Shandon, CA
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in September
Shandon, CA
- Average humidity in September: 46%
The month with the highest relative humidity is February (68%).
The month with the lowest relative humidity is September (46%).
Average rainfall in September
Shandon, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (1.65").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Shandon, CA
- Average rainfall days in September: 1.4 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in September /
Average sunshine in September
Shandon, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).
Average sunshine days in September
Shandon, CA
- Average sunshine days in September: 28.1 days
The month with the most sunshine days is August (29.4 days).
The month with the least sunshine days is February (20 days).
Average UV index in September
Shandon, 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
Shandon, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 31).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Shandon, 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).
Shandon, California, USA
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