October weather forecast
Lake San Marcos, CA

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Weather in October

October, like September, in Lake San Marcos, California, is a moderately hot autumn month, with an average temperature fluctuating between 58.8°F (14.9°C) and 75.4°F (24.1°C).

Temperature

The move into October indicates a slight reduction in the average high-temperature, down from September's warm 80.8°F (27.1°C) to a still moderately hot 75.4°F (24.1°C). Throughout the month of October, Lake San Marcos reports a steady low-temperature average of 58.8°F (14.9°C).

Humidity

The average relative humidity in October in Lake San Marcos is 61%.

Rainfall

In October, in Lake San Marcos, California, the rain falls for 3.5 days. Throughout October, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 52.1 rainfall days, and 6.1" (155mm) of precipitation is accumulated.

Daylight

In October, the average length of the day in Lake San Marcos is 11h and 20min.
On the first day of the month, sunrise is at 6:43 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:06 am and sunset at 5:57 pm PDT.

Sunshine

In October, the average sunshine is 8.9h.

UV index

In Lake San Marcos, the average daily maximum UV index in October is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In October, the maximum UV index of 5 suggests these recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What are the temperatures in Lake San Marcos in October?

During October, Lake San Marcos experiences an average high-temperature of 75.4°F (24.1°C) and a low-temperature of 58.8°F (14.9°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 82.4°F (28°C).

What is the average humidity in October in Lake San Marcos?

The average relative humidity in October in Lake San Marcos is 61%.

How many days does it rain in October in Lake San Marcos?

In Lake San Marcos, California, in October, during 3.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

What is the average length of the day in October in Lake San Marcos?

The average day length in October is 11h and 20min.

When is the sunrise / sunset in October in Lake San Marcos?

On the first day of October in Lake San Marcos, sunrise is at 6:43 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:57 pm PDT.

How many hours of sunshine does Lake San Marcos have in October?

The average sunshine duration in October in Lake San Marcos is 8.9h.

How high is the UV index in October in Lake San Marcos?

In October, the average daily maximum UV index in Lake San Marcos, California, is 5. A UV Index reading 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 October
Lake San Marcos, CA

Average temperature in October - Lake San Marcos, CA
  • Average high temperature in October: 75.4°F

The warmest month (with the highest average high temperature) is August (81.9°F).
The months with the lowest average high temperature are February and December (63.3°F).

  • Average low temperature in October: 58.8°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (48°F).

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Average pressure in October
Lake San Marcos, CA

Average pressure in October - Lake San Marcos, CA
  • Average pressure in October: 29.93"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).

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Average wind speed in October
Lake San Marcos, CA

Average wind speed in October - Lake San Marcos, CA
  • Average wind speed in October: 4.4mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.4mph).

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Average humidity in October
Lake San Marcos, CA

Average humidity in October - Lake San Marcos, CA
  • Average humidity in October: 61%

The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is November (56%).

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Average rainfall in October
Lake San Marcos, CA

Average rainfall in October - Lake San Marcos, CA
  • Average rainfall in October: 0.2"

The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in October
Lake San Marcos, CA

Average rainfall days in October - Lake San Marcos, CA
  • Average rainfall days in October: 3.5 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.2 days).

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Average daylight in October /
Average sunshine in October
Lake San Marcos, CA

Average daylight in October / Average sunshine in October - Lake San Marcos, CA
  • Average daylight in October: 11h 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 October: 8h and 5min

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 48min).

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Average sunshine days in October
Lake San Marcos, CA

Average sunshine days in October - Lake San Marcos, CA
  • Average sunshine days in October: 25 days

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

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Average UV index in October
Lake San Marcos, CA

Average UV index in October - Lake San Marcos, CA
  • Average UV index in October: 5

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in October
Lake San Marcos, CA

Average cloud cover in October - Lake San Marcos, CA
  • Average cloud cover in October: 12

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in October
Lake San Marcos, CA

Average visibility in October - Lake San Marcos, CA
  • Average visibility in October: 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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Lake San Marcos, California, USA

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