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
Riverview Farms's transition from August to September introduces an average high-temperature of a still moderately hot 83.3°F (28.5°C), marking an insignificant variation from the 85.5°F (29.7°C). Riverview Farms witnesses an average low-temperature of 63.5°F (17.5°C) throughout the month of September.Heat index
During September, the heat index is estimated at a hot 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
The average relative humidity in September in Riverview Farms is 57%.Rainfall
In Riverview Farms, in September, it is raining for 3.9 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 49.6 rainfall days, and 5.16" (131mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of September, in Riverview Farms, sunrise is at 6:41 am and sunset at 6:33 pm PDT.
Sunshine
In September, the average sunshine in Riverview Farms 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 estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 suggests this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
How hot is it in Riverview Farms in September?
What is the average humidity in September in Riverview Farms?
How many days does it rain in September in Riverview Farms?
How many hours of daylight does Riverview Farms have in September?
What time are sunrise and sunset in September in Riverview Farms?
How many hours of sunshine does Riverview Farms have in September?
What are the months with the highest UV index in Riverview Farms?
What is the UV index reading in September in Riverview Farms?
Average temperature in September
Riverview Farms, CA
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in September
Riverview Farms, 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
Riverview Farms, CA
- Average wind speed in September: 4.2mph
The windiest months (with the highest average wind speed) are April and May (5.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.2mph).
Average humidity in September
Riverview Farms, 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
Riverview Farms, CA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Riverview Farms, CA
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.4 days).
Average daylight in September /
Average sunshine in September
Riverview Farms, 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
Riverview Farms, CA
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is June (28 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in September
Riverview Farms, 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
Riverview Farms, 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
Riverview Farms, 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).
Riverview Farms, California, USA
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