September weather forecast
South Park, CA

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Weather in September

September, the first month of the autumn in South Park, is also a moderately hot month, with an average temperature ranging between max 85.1°F (29.5°C) and min 60.4°F (15.8°C).

Temperature

As South Park welcomes September, the average high-temperature stabilizes at a warm 85.1°F (29.5°C), showing little deviation from August's 87.4°F (30.8°C). In South Park, the nighttime chill during September is a clear shift from the day's highs, with an average of 60.4°F (15.8°C).

Heat index

September's average heat index is computed to be a tropical 87.8°F (31°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The average relative humidity in September is 54%.

Rainfall

In South Park, California, during September, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, in South Park, there are 60.6 rainfall days, and 9.37" (238mm) of precipitation is accumulated.

Daylight

In South Park, the average length of the day in September is 12h and 22min.
On the first day of September in South Park, California, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:33 pm PDT.

Sunshine

The average sunshine in September in South Park is 10.5h.

UV index

In South Park, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

How hot is September in South Park?

South Park in September has an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 60.4°F (15.8°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in September in South Park?

The average relative humidity in September in South Park is 54%.

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

In South Park, during September, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation.

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

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

What time are sunrise and sunset in September in South Park?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of the month, in South Park, sunrise is at 6:42 am and sunset at 6:33 pm PDT.

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

The average sunshine duration in September in South Park is 10.5h.

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

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe 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
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"Hg

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

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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: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 10h and 3min

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 30min).

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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

The 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

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).

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South Park, California, USA

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