September weather forecast and climate
South Park, CA

Weather in September

September, the first month of the autumn, in South Park, is still a warm month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 85.1°F (29.5°C).

Temperature

In September, the average high-temperature is almost the same as in August - a moderately hot 85.1°F (29.5°C). The average low-temperature, in September, is 60.4°F (15.8°C).

Heat index

The average heat index in September is appraised at a tropical 87.6°F (30.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In South Park, the average relative humidity in September is 54%.

Rainfall

In South Park, California, during 4.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In South Park, California, during the entire year, the rain falls for 60.6 days and collects up to 9.37" (238mm) of precipitation.

Daylight

In September, the average length of the day in South Park is 12.4h.

Sunshine

The average sunshine in September is 10.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in South Park?

In South Park, in September, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 60.4°F (15.8°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines both air temperature and relative humidity, is evaluated at 87.6°F (30.9°C).

What is the average humidity in September in South Park?

In September, the average relative humidity in South Park, California, is 54%.

How many days does it rain in September in South Park?

In South Park, in September, it is raining for 4.1 days, with typically 0.28" (7mm) of accumulated precipitation.

What is the average length of the day in September in South Park?

The average length of the day in September in South Park, California, is 12.4h.

How many hours of sunshine does South Park have in September?

In South Park, California, the average sunshine in September is 10.5h.

What is the UV index intensity in September in South Park?

In September, the average daily maximum UV index in South Park is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
South Park, CA

Average temperature in September - South Park, CA
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

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Average pressure in September
South Park, CA

Average pressure in September - South Park, CA
  • Average pressure in September: 29.87"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in September
South Park, CA

Average wind speed in September - South Park, CA
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average humidity in September
South Park, CA

Average humidity in September - South Park, CA
  • Average humidity in September: 54%

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in September
South Park, CA

Average rainfall in September - South Park, CA
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
South Park, CA

Average rainfall days in September - South Park, CA
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).

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Average daylight in September /
Average sunshine in September
South Park, CA

Average daylight in September / Average sunshine in September - South Park, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 10.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in September
South Park, CA

Average sunshine days in September - South Park, CA
  • Average sunshine days in September: 24 days

The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index in September
South Park, CA

Average UV index in September - South Park, CA
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
South Park, CA

Average cloud cover in September - South Park, CA
  • Average cloud cover in September: 10

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in September
South Park, CA

Average visibility in September - South Park, CA
  • Average visibility in September: 6mi

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

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