September weather forecast
Pieta, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Pieta, California, with an average temperature fluctuating between 82.4°F (28°C) and 52.7°F (11.5°C).

Temperature

Entering September, Pieta's average high-temperature reads a still moderately hot 82.4°F (28°C), indicating a close resemblance to the previous month's climate. A marked drop from daytime peak temperatures to an average low-temperature of 52.7°F (11.5°C) is observed during the nights in September.

Heat index

September's heat index is calculated to be 84.2°F (29°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. 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 particularly relevant to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

The months with the lowest humidity are July and September, with an average relative humidity of 57%.

Rainfall

In Pieta, during September, the rain falls for 2.2 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, there are 82.4 rainfall days, and 20.75" (527mm) of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:42 pm. On the last day of September, in Pieta, sunrise is at 7:08 am and sunset at 6:55 pm PDT.

Sunshine

In September, the average sunshine is 10.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

September temperatures vary between a high-temperature of 82.4°F (28°C) and a low-temperature of 52.7°F (11.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 84.2°F (29°C).

What is the least humid month?

July and September, with an average relative humidity of 57%, are the least humid months.

What is the average humidity in September?

In September, the average relative humidity is 57%.

How many days does it rain in September?

In Pieta, in September, it is raining for 2.2 days, with typically 0.16" (4mm) of accumulated precipitation.

When it does not snow?

January, March through December are months without snowfall.

What is the average length of the day in September in Pieta?

The average day length in September is 12h and 25min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:55 pm PDT.

How long on average sun shines in September?

In Pieta, the average sunshine duration in September is 10.9h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from 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
Pieta, CA

Average temperature in September - Pieta, CA
  • Average high temperature in September: 82.4°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

Average pressure in September
Pieta, CA

Average pressure in September - Pieta, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

Average wind speed in September
Pieta, CA

Average wind speed in September - Pieta, CA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

Average humidity in September
Pieta, CA

Average humidity in September - Pieta, CA
  • Average humidity in September: 57%

The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).

Average rainfall in September
Pieta, CA

Average rainfall in September - Pieta, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in September
Pieta, CA

Average rainfall days in September - Pieta, CA
  • Average rainfall days in September: 2.2 days

The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).

Average snowfall in September
Pieta, CA

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

The month with the highest snowfall is February (0.16").
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
Pieta, CA

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

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Pieta, 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: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Pieta, CA

Average sunshine days in September - Pieta, CA
  • Average sunshine days in September: 27.3 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).

Average UV index in September
Pieta, CA

Average UV index in September - Pieta, 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 November (UV index 2).

Average cloud cover in September
Pieta, CA

Average cloud cover in September - Pieta, CA
  • Average cloud cover in September: 10

The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in September
Pieta, CA

Average visibility in September - Pieta, 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).

Pieta, California, USA

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