September weather forecast
Carlotta, CA

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Weather in September

September, the first month of the autumn in Carlotta, is still a pleasant month, with an average temperature varying between 72.5°F (22.5°C) and 50.9°F (10.5°C).

Temperature

Carlotta's average high-temperature in September sits at an agreeable 72.5°F (22.5°C), showing little difference from the previous month. Despite substantial daily fluctuations, the average low-temperature is a fresh 50.9°F (10.5°C) during September.

Humidity

With an average relative humidity of 73%, September is the least humid month.

Rainfall

In September, the rain falls for 4 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. In Carlotta, during the entire year, the rain falls for 110.9 days and collects up to 28.27" (718mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In Carlotta, California, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm PDT.

Sunshine

In Carlotta, California, the average sunshine in September is 10.2h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 4 in September translates into these instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Carlotta in September?

In Carlotta, in September, the average high-temperature is 72.5°F (22.5°C), and the average low-temperature is 50.9°F (10.5°C).

What is the least humid month?

With an average relative humidity of 73%, September is the least humid month.

What is the average humidity in September in Carlotta?

In Carlotta, the average relative humidity in September is 73%.

How many days does it rain in September?

In September, the rain falls for 4 days. Throughout September, 0.59" (15mm) of precipitation is accumulated.

When it does not snow?

In Carlotta, snow does not fall in January, March through December.

What is the average length of the day in September?

In Carlotta, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:44 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:59 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 10.2h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Carlotta, CA

Average temperature in September - Carlotta, CA
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (52.9°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is February (39.7°F).

Average pressure in September
Carlotta, CA

Average pressure in September - Carlotta, CA
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.96"Hg).

Average wind speed in September
Carlotta, CA

Average wind speed in September - Carlotta, CA
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is June (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in September
Carlotta, CA

Average humidity in September - Carlotta, CA
  • Average humidity in September: 73%

The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).

Average rainfall in September
Carlotta, CA

Average rainfall in September - Carlotta, CA
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in September
Carlotta, CA

Average rainfall days in September - Carlotta, CA
  • Average rainfall days in September: 4 days

The month with the highest number of rainy days is March (17.3 days).
The months with the least rainy days are July and August (1.8 days).

Average snowfall in September
Carlotta, CA

Average snowfall in September - Carlotta, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Carlotta, CA

Average snowfall days in September - Carlotta, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Carlotta, CA

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 10h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Carlotta, CA

Average sunshine days in September - Carlotta, CA
  • Average sunshine days in September: 25.8 days

The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (11.9 days).

Average UV index in September
Carlotta, CA

Average UV index in September - Carlotta, CA
  • Average UV index in September: 4

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 3).

Average cloud cover in September
Carlotta, CA

Average cloud cover in September - Carlotta, CA
  • Average cloud cover in September: 19

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in September
Carlotta, CA

Average visibility in September - Carlotta, CA
  • Average visibility in September: 6mi

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

Carlotta, California, USA

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