October weather forecast
Berkeley, CA

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the neon-lit iconic Berkeley University Sather Tower in California
the neon-lit iconic Berkeley University Sather Tower in California

Weather in October

The full-fledged autumn in October witnesses a sharp fall in temperatures between 54.9°F (12.7°C) to 70.7°F (21.5°C). This dip accompanies the transformation of foliage into vibrant hues, enhancing the aesthetic aura of the city. The precipitation pattern changes with a slight increase to 0.28" (7mm) spreading over 3.5 days. As the city gears up for the oncoming winter, a gradual increase in the cloud cover to 17% is noticeable. The UV index of 4 still calls for appropriate sun protection measures, and the crisp wind adds to the charm of this season.

Temperature

The arrival of October in Berkeley suggests a slight decrease in the average high-temperature, moving from a warm 76.6°F (24.8°C) in September to an agreeable 70.7°F (21.5°C). Berkeley sees an average low-temperature of 54.9°F (12.7°C) during October.

Humidity

October is the least humid month, with an average relative humidity of 64%.

Rainfall

In October, the rain falls for 3.5 days. Throughout October, 0.28" (7mm) of precipitation is accumulated. Throughout the year, there are 55.6 rainfall days, and 5.24" (133mm) of precipitation is accumulated.

Daylight

In October, the average length of the day is 11h and 12min.
On the first day of October, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:10 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in October in Berkeley is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 4 during October morphs into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

What is the temperature in October in Berkeley?

The average high-temperature, in October, in Berkeley, is 70.7°F (21.5°C), while the average low-temperature is 54.9°F (12.7°C).

What is the least humid month in Berkeley?

October is the least humid month in Berkeley, with an average relative humidity of 64%.

What is the average humidity in October in Berkeley?

In October, the average relative humidity in Berkeley, California, is 64%.

How much does it rain in Berkeley in October?

In Berkeley, in October, during 3.5 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

What is the average length of the day in October in Berkeley?

In Berkeley, California, the average day length in October is 11h and 12min.

When is the sunrise / sunset in October in Berkeley?

On the first day of October, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:10 pm PDT.

How many hours of sunshine does Berkeley have in October?

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

What is the UV index reading in October in Berkeley?

In Berkeley, California, the average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Berkeley, CA

Average temperature in October - Berkeley, CA
  • Average high temperature in October: 70.7°F

The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in October: 54.9°F

The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in October
Berkeley, CA

Average pressure in October - Berkeley, 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).

Average wind speed in October
Berkeley, CA

Average wind speed in October - Berkeley, CA
  • Average wind speed in October: 5.2mph

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).

Average humidity in October
Berkeley, CA

Average humidity in October - Berkeley, CA
  • Average humidity in October: 64%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).

Average rainfall in October
Berkeley, CA

Average rainfall in October - Berkeley, CA
  • Average rainfall in October: 0.28"

The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").

Average rainfall days in October
Berkeley, CA

Average rainfall days in October - Berkeley, CA
  • Average rainfall days in October: 3.5 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in October: 7h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in October
Berkeley, CA

Average sunshine days in October - Berkeley, CA
  • Average sunshine days in October: 26 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).

Average UV index in October
Berkeley, CA

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

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

Average cloud cover in October
Berkeley, CA

Average cloud cover in October - Berkeley, CA
  • Average cloud cover in October: 17

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).

Average visibility in October
Berkeley, CA

Average visibility in October - Berkeley, 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).

Berkeley, California, USA

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