September weather forecastFelton, CA
September
Weather in September
September, the first month of the autumn in Felton, is still a warm month, with an average temperature varying between 55.4°F (13°C) and 74.5°F (23.6°C).Temperature
As Felton transitions from August to September, the average high-temperatures adjust to a still moderately hot 74.5°F (23.6°C), nearly the same as the previous 74.8°F (23.8°C). Felton observes an average nighttime low-temperature of 55.4°F (13°C) during the month of September.Humidity
The average relative humidity in September is 69%.Rainfall
In Felton, in September, during 2.9 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. Throughout the year, in Felton, California, there are 72.5 rainfall days, and 13.58" (345mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:52 pm PDT.
Sunshine
In Felton, the average sunshine in September is 10.9h.UV index
June through October, with an average maximum UV index of 5, are months with the highest UV index in Felton, California. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. 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
Average temperature in September
Felton, CA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is September (55.4°F).
The coldest month (with the lowest average low temperature) is February (45.1°F).
Average pressure in September
Felton, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in September
Felton, CA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Felton, CA
- Average humidity in September: 69%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Felton, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (2.6").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Felton, CA
- Average rainfall days in September: 2.9 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Felton, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Felton, CA
- Average sunshine days in September: 26 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in September
Felton, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August, September and October (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Felton, CA
- Average cloud cover in September: 14
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Felton, 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).
