September weather forecast
San Lucas, CA

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Weather in September

September, the first month of the autumn in San Lucas, is also a moderately hot month, with an average temperature varying between 57.4°F (14.1°C) and 84.7°F (29.3°C).

Temperature

San Lucas's September average high-temperature settles at a warm 84.7°F (29.3°C), showing a near match with the preceding month. San Lucas sees a consistent average low-temperature of 57.4°F (14.1°C) in September, indicating a substantial decrease from the day's temperature.

Heat index

September's heat index is calculated to be a tropical 86°F (30°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In September, the average relative humidity in San Lucas is 48%.

Rainfall

In San Lucas, during September, the rain falls for 1.6 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 62.4 rainfall days, and 9.45" (240mm) of precipitation is accumulated.

Daylight

In San Lucas, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:48 pm PDT.

Sunshine

The average sunshine in September is 11.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. To guard against the harmful effects of the Sun, minimize exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

How hot is September in San Lucas?

The high-temperature, in September, in San Lucas, records 84.7°F (29.3°C), while the low-temperature is 57.4°F (14.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is calculated to be 86°F (30°C).

What is the average humidity in September in San Lucas?

In San Lucas, California, the average relative humidity in September is 48%.

How much does it rain in San Lucas in September?

In San Lucas, in September, it is raining for 1.6 days, with typically 0.08" (2mm) of accumulated precipitation.

How many hours of daylight does San Lucas have in September?

The average day length in September in San Lucas is 12h and 23min.

When are sunrise and sunset in September in San Lucas?

On the first day of September, sunrise is at 6:36 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:48 pm PDT.

How long on average sun shines in September in San Lucas?

In San Lucas, California, the average sunshine duration in September is 11.5h.

How high is the UV index in September in San Lucas?

The average daily maximum UV index in September in San Lucas, California, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from 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
San Lucas, CA

Average temperature in September - San Lucas, CA
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (56.8°F).

  • Average low temperature in September: 57.4°F

The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).

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Average pressure in September
San Lucas, CA

Average pressure in September - San Lucas, 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).

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Average wind speed in September
San Lucas, CA

Average wind speed in September - San Lucas, CA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in September
San Lucas, CA

Average humidity in September - San Lucas, CA
  • Average humidity in September: 48%

The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is July (46%).

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Average rainfall in September
San Lucas, CA

Average rainfall in September - San Lucas, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in September
San Lucas, CA

Average rainfall days in September - San Lucas, CA
  • Average rainfall days in September: 1.6 days

The month with the highest number of rainy days is March (11.8 days).
The month with the least rainy days is August (0.4 days).

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Average daylight in September /
Average sunshine in September
San Lucas, CA

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 11h 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 6min).

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Average sunshine days in September
San Lucas, CA

Average sunshine days in September - San Lucas, CA
  • Average sunshine days in September: 27.7 days

The month with the most sunshine days is August (30.1 days).
The month with the least sunshine days is March (18.3 days).

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Average UV index in September
San Lucas, CA

Average UV index in September - San Lucas, CA
  • Average UV index in September: 5

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

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Average cloud cover in September
San Lucas, CA

Average cloud cover in September - San Lucas, CA
  • Average cloud cover in September: 6

The months with the most cloud cover are March and December (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 4).

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Average visibility in September
San Lucas, CA

Average visibility in September - San Lucas, 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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San Lucas, California, USA

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