September weather forecast
Felton, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Felton, California, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 74.5°F (23.6°C).

Temperature

Felton's September average high-temperature settles at a still moderately hot 74.5°F (23.6°C), showing a near match with the preceding month. Throughout the month of September, Felton expects an average low of 55.4°F (13°C).

Humidity

The average relative humidity in September is 69%.

Rainfall

In September, the rain falls for 2.9 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. In Felton, during the entire year, the rain falls for 72.5 days and collects up to 13.58" (345mm) of precipitation.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:39 am and sunset at 7:36 pm. On the last day of the month, 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. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

What is the usual temperature for Felton in September?

The average high-temperature, in September, in Felton, is 74.5°F (23.6°C), while the average low-temperature is 55.4°F (13°C).

What is the average humidity in September in Felton?

The average relative humidity in September in Felton is 69%.

How much does it rain in Felton in September?

In Felton, California, in September, it is raining for 2.9 days, with typically 0.12" (3mm) of accumulated precipitation.

What is the average length of the day in September in Felton?

In Felton, California, the average day length in September is 12h and 24min.

When are sunrise and sunset in September in Felton?

On the first day of September in Felton, sunrise is at 6:39 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:52 pm PDT.

How long on average sun shines in September in Felton?

The average sunshine duration in September is 10.9h.

When is the highest UV index in Felton?

The months with the highest UV index are June through October, with an average maximum UV index of 5.

What is the UV index intensity in September in Felton?

In September, the average daily maximum UV index in Felton, California, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Felton, CA

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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in September - Felton, CA
  • Average daylight in September: 12h and 2min

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 5min

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 - 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 - 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 - 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 - 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).

Felton, California, USA

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