September weather forecast
Carnelian Bay, CA

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Weather in September

September, the first month of the autumn in Carnelian Bay, is still a pleasant month, with an average temperature varying between 69.3°F (20.7°C) and 43.7°F (6.5°C).

Temperature

As September arrives, Carnelian Bay's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 75.7°F (24.3°C) to a pleasant 69.3°F (20.7°C). During September, Carnelian Bay notes a substantial drop from the daytime peak to an average minimum temperature of 43.7°F (6.5°C).

Humidity

The average relative humidity in September in Carnelian Bay is 44%.

Rainfall

In Carnelian Bay, during September, the rain falls for 1.8 days and regularly aggregates up to 0.2" (5mm) of precipitation. In Carnelian Bay, during the entire year, the rain falls for 46.9 days and collects up to 17.28" (439mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Carnelian Bay, California. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Carnelian Bay, there are 65.4 snowfall days, and 93.39" (2372mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of September, in Carnelian Bay, sunrise is at 6:56 am and sunset at 6:43 pm PDT.

Sunshine

In September, the average sunshine in Carnelian Bay, California, is 11.2h.

UV index

In Carnelian Bay, California, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Boost your sun resistance with garments that are densely woven yet spacious. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.

Frequently asked questions

What is the usual temperature for Carnelian Bay in September?

The high-temperature, in September, in Carnelian Bay, records 69.3°F (20.7°C), while the low-temperature is 43.7°F (6.5°C).

What is the average humidity in September in Carnelian Bay?

The average relative humidity in September in Carnelian Bay, California, is 44%.

How many days does it rain in September in Carnelian Bay?

In September, the rain falls for 1.8 days. Throughout September, 0.2" (5mm) of precipitation is accumulated.

When does it start snowing in Carnelian Bay?

September is the first month it typically snows in Carnelian Bay, California. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow.

What is the average length of the day in September in Carnelian Bay?

In September, the average day length in Carnelian Bay, California, is 12h and 26min.

What time are sunrise and sunset in September in Carnelian Bay?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, in Carnelian Bay, California, sunrise is at 6:56 am and sunset at 6:43 pm PDT.

How long on average sun shines in September in Carnelian Bay?

In Carnelian Bay, the average sunshine duration in September is 11.2h.

What is the UV index reading in September in Carnelian Bay?

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

Average temperature in September
Carnelian Bay, CA

Average temperature in September - Carnelian Bay, CA
  • Average high temperature in September: 69.3°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in September: 43.7°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

Average pressure in September
Carnelian Bay, CA

Average pressure in September - Carnelian Bay, CA
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Carnelian Bay, CA

Average wind speed in September - Carnelian Bay, CA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Carnelian Bay, CA

Average humidity in September - Carnelian Bay, CA
  • Average humidity in September: 44%

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is August (39%).

Average rainfall in September
Carnelian Bay, CA

Average rainfall in September - Carnelian Bay, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is February (3.35").
The driest months (with the least rainfall) are June and August (0.12").

Average rainfall days in September
Carnelian Bay, CA

Average rainfall days in September - Carnelian Bay, CA
  • Average rainfall days in September: 1.8 days

The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is September (1.8 days).

Average snowfall in September
Carnelian Bay, CA

Average snowfall in September - Carnelian Bay, CA
  • Average snowfall in September: 0.08"

The month with the highest snowfall is March (20.63").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Carnelian Bay, CA

Average snowfall days in September - Carnelian Bay, CA
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Carnelian Bay, CA

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September
Carnelian Bay, CA

Average sunshine days in September - Carnelian Bay, CA
  • Average sunshine days in September: 28 days

The month with the most sunshine days is September (28 days).
The month with the least sunshine days is March (15.2 days).

Average UV index in September
Carnelian Bay, CA

Average UV index in September - Carnelian Bay, CA
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Carnelian Bay, CA

Average cloud cover in September - Carnelian Bay, CA
  • Average cloud cover in September: 9

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 7).

Average visibility in September
Carnelian Bay, CA

Average visibility in September - Carnelian Bay, CA
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

Carnelian Bay, California, USA

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