October weather forecast
Sonoma, CA

Neat rows of vines in a vineyard farm in Sonoma, California
Neat rows of vines in a vineyard farm in Sonoma, California

Weather in October

October, the same as September, in Sonoma, California, is an agreeable autumn month, with average temperature ranging between max 73.2°F (22.9°C) and min 51.6°F (10.9°C).

Temperature

In Sonoma, the average high-temperature marginally drops, from a warm 81.1°F (27.3°C) in September, to a pleasant 73.2°F (22.9°C). In October, the average low-temperature is 51.6°F (10.9°C).

Humidity

In October, the average relative humidity in Sonoma, California, is 60%.

Rainfall

In Sonoma, during October, the rain falls for 4.6 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, in Sonoma, there are 73.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.

Daylight

The average length of the day in October is 11.2h.

Sunshine

In Sonoma, the average sunshine is 7h.

UV index

The average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In October, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in October in Sonoma?

In Sonoma, the average relative humidity in October is 60%.

How many days does it rain in October in Sonoma?

In October, in Sonoma, the rain falls for 4.6 days. Throughout October, 0.83" (21mm) of precipitation is accumulated.

How many hours of daylight does Sonoma have in October?

In October, the average length of the day in Sonoma, California, is 11.2h.

How long on average sun shines in October in Sonoma?

In October, the average sunshine is 7h.

What is the UV index intensity in October in Sonoma?

The average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in October
Sonoma, CA

Average temperature in October - Sonoma, CA
  • Average high temperature in October: 22.9°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is December (12.8°C).

  • Average low temperature in October: 10.9°C

The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is December (5.2°C).

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Average pressure in October
Sonoma, CA

Average pressure in October - Sonoma, CA
  • Average pressure in October: 1015.4mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

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Average wind speed in October
Sonoma, CA

Average wind speed in October - Sonoma, CA
  • Average wind speed in October: 7.4km/h

The windiest month (with the highest average wind speed) is May (10km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).

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Average humidity in October
Sonoma, CA

Average humidity in October - Sonoma, CA
  • Average humidity in October: 60%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (59%).

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Average rainfall in October
Sonoma, CA

Average rainfall in October - Sonoma, CA
  • Average rainfall in October: 21mm

The wettest month (with the highest rainfall) is February (87mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in October
Sonoma, CA

Average rainfall days in October - Sonoma, CA
  • Average rainfall days in October: 4.6 days

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in October /
Average sunshine in October
Sonoma, CA

Average daylight in October / Average sunshine in October - Sonoma, CA
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in October
Sonoma, CA

Average sunshine days in October - Sonoma, CA
  • Average sunshine days in October: 25.3 days

The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is March (16.1 days).

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Average UV index in October
Sonoma, CA

Average UV index in October - Sonoma, CA
  • Average UV index in October: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in October
Sonoma, CA

Average cloud cover in October - Sonoma, CA
  • Average cloud cover in October: 18

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in October
Sonoma, CA

Average visibility in October - Sonoma, CA
  • Average visibility in October: 9km

Months with the highest visibility are June, July and September (10km).
Months with the lowest visibility are January, February, March, April, May, August, October, November and December (9km).

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