October weather forecast and climate
San Luis Obispo, CA

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, like September, in San Luis Obispo, California, is another warm autumn month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 74.3°F (23.5°C).

Temperature

In October, the average high-temperature slightly decreases, from a warm 79.9°F (26.6°C) in September, to a still moderately hot 74.3°F (23.5°C). In San Luis Obispo, in October, the average low-temperature is 56.5°F (13.6°C).

Humidity

Months with the lowest humidity in San Luis Obispo are September and October, with an average relative humidity of 57%.

Rainfall

In San Luis Obispo, California,, during 3.4 rainfall days, 0.47" (12mm) of precipitation is typically 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

The average length of the day in October is 11.3h.

Sunshine

The average sunshine in San Luis Obispo is 7.6h.

UV index

In October, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in October transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the least humid month in San Luis Obispo?

Months with the lowest humidity in San Luis Obispo, California, are September and October, with an average relative humidity of 57%.

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

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

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

In San Luis Obispo, California, 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?

The average length of the day in October is 11.3h.

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

The average sunshine in October is 7.6h.

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

In October, the average daily maximum UV index in San Luis Obispo, California, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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%).
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: 11.3h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in October: 7.6h

Months with the most sunshine are June, July and August (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.5).

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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

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).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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