September weather forecast
Pala Mesa, CA

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Weather in September

September, the first month of the autumn in Pala Mesa, is still a warm month, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.7°F (27.6°C).

Temperature

Pala Mesa measures an average high-temperature of a still moderately hot 81.7°F (27.6°C) in September, nearly consistent with the preceding month. Pala Mesa encounters an average low-temperature of 61.9°F (16.6°C) during September nights.

Heat index

For most parts of September, the heat index is evaluated at 84.2°F (29°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

In Pala Mesa, the average relative humidity in September is 61%.

Rainfall

In Pala Mesa, in September, during 4.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. In Pala Mesa, during the entire year, the rain falls for 63.6 days and collects up to 8.98" (228mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 6:23 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

In September, the average sunshine is 10.5h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Pala Mesa?

The average high-temperature and low-temperature during September are 81.7°F (27.6°C) and 61.9°F (16.6°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 84.2°F (29°C).

What is the average humidity in September?

The average relative humidity in September is 61%.

How much does it rain in Pala Mesa in September?

In Pala Mesa, during September, the rain falls for 4.4 days and regularly aggregates up to 0.31" (8mm) of precipitation.

What is the average length of the day in September?

In September, the average day length is 12h and 22min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:23 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.

How many hours of sunshine does Pala Mesa have in September?

In Pala Mesa, California, the average sunshine duration in September is 10.5h.

What are the months with the highest UV index?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in September?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Pala Mesa, CA

Average temperature in September - Pala Mesa, CA
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).

Average pressure in September
Pala Mesa, CA

Average pressure in September - Pala Mesa, CA
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Pala Mesa, CA

Average wind speed in September - Pala Mesa, CA
  • Average wind speed in September: 4.4mph

The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).

Average humidity in September
Pala Mesa, CA

Average humidity in September - Pala Mesa, CA
  • Average humidity in September: 61%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).

Average rainfall in September
Pala Mesa, CA

Average rainfall in September - Pala Mesa, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in September
Pala Mesa, CA

Average rainfall days in September - Pala Mesa, CA
  • Average rainfall days in September: 4.4 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).

Average daylight in September /
Average sunshine in September
Pala Mesa, CA

Average daylight in September / Average sunshine in September - Pala Mesa, 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 months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in September
Pala Mesa, CA

Average sunshine days in September - Pala Mesa, CA
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).

Average UV index in September
Pala Mesa, CA

Average UV index in September - Pala Mesa, CA
  • Average UV index in September: 6

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

Average cloud cover in September
Pala Mesa, CA

Average cloud cover in September - Pala Mesa, CA
  • Average cloud cover in September: 10

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 6).

Average visibility in September
Pala Mesa, CA

Average visibility in September - Pala Mesa, 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).

Pala Mesa, California, USA

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