October weather forecast
San Luis Obispo, CA

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Beautiful blue water surrounded by scenic mountain ranges at the San Luis Obispo, California
Beautiful blue water surrounded by scenic mountain ranges at the San Luis Obispo, California

Weather in October

October, the same as September, is another warm autumn month in San Luis Obispo, California, with an average temperature fluctuating between 74.3°F (23.5°C) and 56.5°F (13.6°C).

Temperature

The arrival of October suggests a slight decrease in the average high-temperature, moving from 79.9°F (26.6°C) in September to a still warm 74.3°F (23.5°C). October nights in San Luis Obispo are marked by an average temperature drop to a mild 56.5°F (13.6°C).

Humidity

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

Rainfall

In October, in San Luis Obispo, the rain falls for 3.4 days. Throughout October, 0.47" (12mm) of precipitation is accumulated. In San Luis Obispo, during the entire year, the rain falls for 57 days and collects up to 9.57" (243mm) of precipitation.

Daylight

In October, the average length of the day in San Luis Obispo is 11h and 17min.
On the first day of the month, sunrise is at 6:58 am and sunset at 6:45 pm. On the last day of October, sunrise is at 7:23 am and sunset at 6:08 pm PDT.

Sunshine

The average sunshine in October is 7.6h.

UV index

In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during October translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's radiation is especially intense around midday; try to stay in shade during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What are the temperatures in San Luis Obispo in October?

The high-temperature, in October, in San Luis Obispo, is 74.3°F (23.5°C), while the low-temperature averages to 56.5°F (13.6°C).

What are the least humid months in San Luis Obispo?

September and October, with an average relative humidity of 57%, are the least humid months in San Luis Obispo.

What is the average humidity in October in San Luis Obispo?

In October, the average relative humidity in San Luis Obispo, California, is 57%.

How much does it rain in San Luis Obispo in October?

In San Luis Obispo, in October, it is raining for 3.4 days, with typically 0.47" (12mm) of accumulated precipitation.

What is the average length of the day in October in San Luis Obispo?

In San Luis Obispo, the average day length in October is 11h and 17min.

When is the sunrise / sunset in October in San Luis Obispo?

On the first day of October in San Luis Obispo, sunrise is at 6:58 am and sunset at 6:45 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 6:08 pm PDT.

How many hours of sunshine does San Luis Obispo have in October?

The average sunshine duration in October is 7.6h.

What is the UV index reading in October in San Luis Obispo?

In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
San Luis Obispo, CA

Average temperature in October - San Luis Obispo, CA
  • Average high temperature in October: 74.3°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).

  • Average low temperature in October: 56.5°F

The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).

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Average pressure in October
San Luis Obispo, CA

Average pressure in October - San Luis Obispo, CA
  • Average pressure in October: 29.97"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed in October
San Luis Obispo, CA

Average wind speed in October - San Luis Obispo, CA
  • Average wind speed in October: 5.8mph

The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).

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Average humidity in October
San Luis Obispo, CA

Average humidity in October - San Luis Obispo, CA
  • Average humidity in October: 57%

The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).

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Average rainfall in October
San Luis Obispo, CA

Average rainfall in October - San Luis Obispo, CA
  • Average rainfall in October: 0.47"

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in October
San Luis Obispo, CA

Average rainfall days in October - San Luis Obispo, CA
  • Average rainfall days in October: 3.4 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in October /
Average sunshine in October
San Luis Obispo, CA

Average daylight in October / Average sunshine in October - San Luis Obispo, CA
  • Average daylight in October: 11h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in October: 7h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

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Average sunshine days in October
San Luis Obispo, CA

Average sunshine days in October - San Luis Obispo, CA
  • Average sunshine days in October: 26.7 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).

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Average UV index in October
San Luis Obispo, CA

Average UV index in October - San Luis Obispo, CA
  • Average UV index in October: 5

The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).

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Average cloud cover in October
San Luis Obispo, CA

Average cloud cover in October - San Luis Obispo, CA
  • Average cloud cover in October: 12

The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).

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Average visibility in October
San Luis Obispo, CA

Average visibility in October - San Luis Obispo, 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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San Luis Obispo, California, USA

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