Sonoma
California, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Sonoma, CA

Neat rows of vines in a vineyard farm in Sonoma, California, the sun rays beaming through the cloudy sunset sky, and distant hilly silhouettes
Neat rows of vines in a vineyard farm in Sonoma, California, the sun rays beaming through the cloudy sunset sky, and distant hilly silhouettes
October, the same as September, in Sonoma, California, is another pleasant autumn month, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 51.6°F (10.9°C).

Temperature

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

Humidity

In Sonoma, the average relative humidity 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, California, 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 October, the average sunshine in Sonoma is 7h.

UV index

In October, the average daily maximum UV index in Sonoma is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in October in Sonoma?

In Sonoma, California, in October, the average high-temperature is 73.2°F (22.9°C), and the average low-temperature is 51.6°F (10.9°C).

What is the average humidity in October in Sonoma?

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

How much does it rain in Sonoma in October?

In Sonoma, in October, during 4.6 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

How many hours of daylight does Sonoma have in October?

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

How many hours of sunshine does Sonoma have in October?

In Sonoma, California, the average sunshine in October is 7h.

How high is the UV index in October in Sonoma?

In Sonoma, California, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in October - Sonoma, CA
  • Average high temperature in October: 73.2°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in October: 51.6°F

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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%).

Average rainfall in October - Sonoma, CA
  • Average rainfall in October: 0.83"

The wettest month (with the highest rainfall) is February (3.43").
Driest months (with the lowest rainfall) are July and August (0.04").

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 lowest number of rainy days is August (0.8 days).

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 shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 7h

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

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).