October weather forecast and climate
Mill Valley, CA

Weather in October

October, the same as September, in Mill Valley, California, is another pleasant autumn month, with average temperature ranging between max 68.9°F (20.5°C) and min 54.3°F (12.4°C).

Temperature

In October, the average high-temperature is relatively the same as in September - a still pleasant 68.9°F (20.5°C). The average low-temperature, in October, is 54.3°F (12.4°C).

Humidity

October is the least humid month in Mill Valley, California, with an average relative humidity of 68%.

Rainfall

In October, the rain falls for 2.6 days. Throughout October, 0.12" (3mm) of precipitation is accumulated. In Mill Valley, 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 Mill Valley is 11.2h.

Sunshine

In Mill Valley, the average sunshine is 6.8h.

UV index

In October, the average daily maximum UV index in Mill Valley is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 4 in October transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 temperature in October in Mill Valley?

In October, in Mill Valley, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 54.3°F (12.4°C).

What is the least humid month in Mill Valley?

October is the least humid month in Mill Valley, with an average relative humidity of 68%.

What is the average humidity in October in Mill Valley?

In October, the average relative humidity in Mill Valley is 68%.

How much does it rain in Mill Valley in October?

In Mill Valley, California, in October, it is raining for 2.6 days, with typically 0.12" (3mm) of accumulated precipitation.

What is the average length of the day in October in Mill Valley?

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

How long on average sun shines in October in Mill Valley?

In October, the average sunshine is 6.8h.

What is the UV index intensity in October in Mill Valley?

In October, the average daily maximum UV index in Mill Valley, California, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in October
Mill Valley, CA

Average temperature in October - Mill Valley, 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
Mill Valley, CA

Average pressure in October - Mill Valley, CA
  • Average pressure in October: 29.98"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in October
Mill Valley, CA

Average wind speed in October - Mill Valley, 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
Mill Valley, CA

Average humidity in October - Mill Valley, 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
Mill Valley, CA

Average rainfall in October - Mill Valley, 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
Mill Valley, CA

Average rainfall days in October - Mill Valley, CA
  • Average rainfall days in October: 2.6 days

The month with the highest number of rainy days is March (8.8 days).
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
Mill Valley, CA

Average daylight in October / Average sunshine in October - Mill Valley, 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: 9.6h).

  • Average sunshine in October: 6.8h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in October
Mill Valley, CA

Average sunshine days in October - Mill Valley, 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
Mill Valley, CA

Average UV index in October - Mill Valley, CA
  • Average UV index in October: 4

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

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Average cloud cover in October
Mill Valley, CA

Average cloud cover in October - Mill Valley, 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
Mill Valley, CA

Average visibility in October - Mill Valley, 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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