October weather forecast
San Rafael, CA

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Weather in October

October, the same as September, in San Rafael, California, is an agreeable autumn month, with temperature in the range of an average high of 68.9°F (20.5°C) and an average low of 54.3°F (12.4°C).

Temperature

The initiation of October sees an average high-temperature of a still pleasant 68.9°F (20.5°C), showing minor variations from the previous month. During October, the temperature tends to dip to an average of 54.3°F (12.4°C) at night.

Humidity

The least humid month in San Rafael, California, is October, with an average relative humidity of 68%.

Rainfall

In San Rafael, California, in October, during 2.6 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. In San Rafael, during the entire year, the rain falls for 48 days and collects up to 3.94" (100mm) of precipitation.

Daylight

In October, the average length of the day in San Rafael is 11h and 11min.
On the first day of the month, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of October, sunrise is at 7:35 am and sunset at 6:11 pm PDT.

Sunshine

The average sunshine in October is 6.8h.

UV index

In San Rafael, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during October translates into the following guidance:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the average October temperature in San Rafael?

The average high-temperature, in October, in San Rafael, is 68.9°F (20.5°C), while the average low-temperature is 54.3°F (12.4°C).

What is the least humid month in San Rafael?

With an average relative humidity of 68%, October is the least humid month in San Rafael, California.

What is the average humidity in October in San Rafael?

The average relative humidity in October in San Rafael, California, is 68%.

How many days does it rain in October in San Rafael?

In San Rafael, California, during October, the rain falls for 2.6 days and regularly aggregates up to 0.12" (3mm) of precipitation.

What is the average length of the day in October in San Rafael?

In October, the average day length in San Rafael is 11h and 11min.

What time are sunrise and sunset in October in San Rafael?

In October, on the first day of the month, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of the month, in San Rafael, sunrise is at 7:35 am and sunset at 6:11 pm PDT.

How many hours of sunshine does San Rafael have in October?

In San Rafael, California, the average sunshine duration in October is 6.8h.

How high is the UV index in October in San Rafael?

In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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 October
San Rafael, CA

Average temperature in October - San Rafael, CA
  • Average high temperature in October: 68.9°F

The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in October: 54.3°F

The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).

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Average pressure in October
San Rafael, CA

Average pressure in October - San Rafael, CA
  • Average pressure in October: 29.98"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 October
San Rafael, CA

Average wind speed in October - San Rafael, CA
  • Average wind speed in October: 5.5mph

The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).

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Average humidity in October
San Rafael, CA

Average humidity in October - San Rafael, CA
  • Average humidity in October: 68%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in October
San Rafael, CA

Average rainfall in October - San Rafael, CA
  • Average rainfall in October: 0.12"

The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in October
San Rafael, CA

Average rainfall days in October - San Rafael, CA
  • Average rainfall days in October: 2.6 days

The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).

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Average daylight in October /
Average sunshine in October
San Rafael, CA

Average daylight in October / Average sunshine in October - San Rafael, CA
  • Average daylight in October: 11h and 1min

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

  • Average sunshine in October: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in October
San Rafael, CA

Average sunshine days in October - San Rafael, CA
  • Average sunshine days in October: 26.2 days

The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).

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Average UV index in October
San Rafael, CA

Average UV index in October - San Rafael, CA
  • Average UV index in October: 4

The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in October
San Rafael, CA

Average cloud cover in October - San Rafael, CA
  • Average cloud cover in October: 21

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).

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Average visibility in October
San Rafael, CA

Average visibility in October - San Rafael, 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 Rafael, California, USA

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