September weather forecast
Terra Cotta, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Terra Cotta, California, with an average temperature ranging between max 85.3°F (29.6°C) and min 61.7°F (16.5°C).

Temperature

Terra Cotta experiences a transition to a moderately hot 85.3°F (29.6°C) in average high-temperatures with the arrival of September, not greatly differing from August's 89.1°F (31.7°C). The nighttime average for Terra Cotta in September plummets considerably from its daytime counterpart, resting at a refreshing 61.7°F (16.5°C).

Heat index

For September, the heat index is evaluated at a tropical 87.8°F (31°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In Terra Cotta, the average relative humidity in September is 51%.

Rainfall

In September, in Terra Cotta, the rain falls for 1.8 days. Throughout September, 0.04" (1mm) of precipitation is accumulated. In Terra Cotta, during the entire year, the rain falls for 34.6 days and collects up to 2.56" (65mm) of precipitation.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of September, in Terra Cotta, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

Sunshine

The average sunshine in September is 10.6h.

UV index

In Terra Cotta, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Terra Cotta in September?

The high-temperature in Terra Cotta during September is 85.3°F (29.6°C) and the low-temperature is 61.7°F (16.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 87.8°F (31°C).

What is the average humidity in September in Terra Cotta?

In September, the average relative humidity in Terra Cotta is 51%.

How many days does it rain in September in Terra Cotta?

In Terra Cotta, during September, the rain falls for 1.8 days and regularly aggregates up to 0.04" (1mm) of precipitation.

What is the average length of the day in September in Terra Cotta?

The average day length in September is 12h and 22min.

What time are sunrise and sunset in September in Terra Cotta?

In September, on the first day of the month, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of the month, in Terra Cotta, California, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

How many hours of sunshine does Terra Cotta have in September?

The average sunshine duration in September in Terra Cotta, California, is 10.6h.

How high is the UV index in September in Terra Cotta?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to 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
Terra Cotta, CA

Average temperature in September - Terra Cotta, CA
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is August (89.1°F).
The month with the lowest average high temperature is December (61.5°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).

Average pressure in September
Terra Cotta, CA

Average pressure in September - Terra Cotta, CA
  • Average pressure in September: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in September
Terra Cotta, CA

Average wind speed in September - Terra Cotta, CA
  • Average wind speed in September: 4.1mph

The windiest month (with the highest average wind speed) is April (5.4mph).
The calmest months (with the lowest average wind speed) are August and September (4.1mph).

Average humidity in September
Terra Cotta, CA

Average humidity in September - Terra Cotta, CA
  • Average humidity in September: 51%

The month with the highest relative humidity is May (62%).
The months with the lowest relative humidity are August and November (50%).

Average rainfall in September
Terra Cotta, CA

Average rainfall in September - Terra Cotta, CA
  • Average rainfall in September: 0.04"

The wettest month (with the highest rainfall) is February (0.55").
The driest month (with the least rainfall) is June (0").

Average rainfall days in September
Terra Cotta, CA

Average rainfall days in September - Terra Cotta, CA
  • Average rainfall days in September: 1.8 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

Average daylight in September /
Average sunshine in September
Terra Cotta, CA

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in September
Terra Cotta, CA

Average sunshine days in September - Terra Cotta, CA
  • Average sunshine days in September: 26.6 days

The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22.8 days).

Average UV index in September
Terra Cotta, CA

Average UV index in September - Terra Cotta, CA
  • Average UV index in September: 6

The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Terra Cotta, CA

Average cloud cover in September - Terra Cotta, CA
  • Average cloud cover in September: 8

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in September
Terra Cotta, CA

Average visibility in September - Terra Cotta, 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).

Terra Cotta, California, USA

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