September weather forecast
Scotts Valley, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Scotts Valley, California, with an average temperature ranging between min 55.4°F (13°C) and max 74.5°F (23.6°C).

Temperature

The arrival of September sees a recorded average high-temperature of a still warm 74.5°F (23.6°C), showing little divergence from the previous month's conditions. An average nighttime temperature of 55.4°F (13°C) is recorded during September.

Humidity

In Scotts Valley, the average relative humidity in September is 69%.

Rainfall

In Scotts Valley, in September, it is raining for 2.9 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 72.5 rainfall days, and 13.58" (345mm) of precipitation is accumulated.

Daylight

In Scotts Valley, the average length of the day in September is 12h and 24min.
On the first day of September in Scotts Valley, 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

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 rays for average individuals.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Scotts Valley in September?

The high-temperature, in September, in Scotts Valley, is 74.5°F (23.6°C), while the low-temperature averages to 55.4°F (13°C).

What is the average humidity in September?

In Scotts Valley, the average relative humidity in September is 69%.

How much does it rain in September?

In September, the rain falls for 2.9 days. Throughout September, 0.12" (3mm) of precipitation is accumulated.

What is the average length of the day in September?

The average day length in September is 12h and 24min.

When is the sunrise / sunset in September?

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

How long on average sun shines in September?

In September, the average sunshine duration is 10.9h.

What is the month with the highest UV index?

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

What is the UV index reading in September?

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

Average temperature in September
Scotts Valley, CA

Average temperature in September - Scotts Valley, 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
Scotts Valley, CA

Average pressure in September - Scotts Valley, 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
Scotts Valley, CA

Average wind speed in September - Scotts Valley, 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
Scotts Valley, CA

Average humidity in September - Scotts Valley, 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
Scotts Valley, CA

Average rainfall in September - Scotts Valley, 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
Scotts Valley, CA

Average rainfall days in September - Scotts Valley, 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
Scotts Valley, CA

Average daylight in September / Average sunshine in September - Scotts Valley, 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
Scotts Valley, CA

Average sunshine days in September - Scotts Valley, 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
Scotts Valley, CA

Average UV index in September - Scotts Valley, 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
Scotts Valley, CA

Average cloud cover in September - Scotts Valley, 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
Scotts Valley, CA

Average visibility in September - Scotts Valley, 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).

Scotts Valley, California, USA

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