Monthly weather forecast and climate
Oakley, CA

Weather in January

January in Oakley, California, is a moderate winter month, with temperature in the range of an average high of 56.1°F (13.4°C) and an average low of 41.5°F (5.3°C). In January, the average high-temperature is almost the same as in December - a mild 56.1°F (13.4°C). Weather in January »

Weather in February

February, the last month of the winter, in Oakley, is also a moderate month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 42.4°F (5.8°C). In February, the average high-temperature is relatively the same as in January - a still moderate 59.7°F (15.4°C). Weather in February »

Weather in March

March, the first month of the spring, in Oakley, is an enjoyable month, with average temperature varying between 63.5°F (17.5°C) and 43.9°F (6.6°C). In Oakley, the average high-temperature is practically the same as in February - a comfortable 63.5°F (17.5°C). Weather in March »

Weather in April

April in Oakley, California, is a pleasant spring month, with average temperature varying between 46.6°F (8.1°C) and 69.4°F (20.8°C). In April, the average high-temperature slightly increases, from a comfortable 63.5°F (17.5°C) in March, to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Oakley, California, with average temperature varying between 75.6°F (24.2°C) and 50.5°F (10.3°C). In May, the average high-temperature marginally rises, from a pleasant 69.4°F (20.8°C) in April, to a warm 75.6°F (24.2°C). Weather in May »

Weather in June

June, the first month of the summer, in Oakley, is still a warm month, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 55°F (12.8°C). In Oakley, the average high-temperature in June marginally rises, from 75.6°F (24.2°C) in May, to a still warm 84.4°F (29.1°C). Weather in June »

Weather in July

July is a tropical summer month in Oakley, California, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 88.5°F (31.4°C). July is the warmest month, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 56.5°F (13.6°C). In July, the average heat index is calculated to a tropical 93.2°F (34°C). Weather in July »

Weather in August

August, the last month of the summer, in Oakley, is another tropical month, with average temperature fluctuating between 57.4°F (14.1°C) and 87.4°F (30.8°C). In August, the average high-temperature is essentially the same as in July - a still hot 87.4°F (30.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Oakley, is also a moderately hot month, with average temperature ranging between min 57.7°F (14.3°C) and max 85.3°F (29.6°C). In Oakley, the average high-temperature is essentially the same as in August - a moderately hot 85.3°F (29.6°C). Weather in September »

Weather in October

October, like September, in Oakley, California, is a moderately hot autumn month, with average temperature fluctuating between 75.9°F (24.4°C) and 54°F (12.2°C). In October, the average high-temperature decreases, from a moderately hot 85.3°F (29.6°C) in September, to a still warm 75.9°F (24.4°C). Weather in October »

Weather in November

November, the last month of the autumn, in Oakley, is another comfortable month, with temperature in the range of an average high of 63.9°F (17.7°C) and an average low of 46.6°F (8.1°C). In Oakley, the average high-temperature drops, from a moderately hot 75.9°F (24.4°C) in October, to a comfortable 63.9°F (17.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Oakley, California, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 55°F (12.8°C). With an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41.7°F (5.4°C), December is the coldest month. Weather in December »
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FAQ

What is the most humid month in Oakley?

The most humid month in Oakley, California, is January, with an average relative humidity of 74%.

How much does it rain in Oakley?

In Oakley, during the entire year, the rain falls for 62 days and collects up to 10.16" (258mm) of precipitation.

How many days does it snow in Oakley?

In Oakley, California, during the entire year, snow falls for 0.1 days.

When it does not snow in Oakley?

January through November are months without snowfall.

What are the months with the lowest UV index in Oakley?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Oakley, California.

What is the rainiest month in Oakley?

The month with the most rainfall in Oakley, California, is February when the rain falls for 7.8 days and typically aggregates up to 2.09" (53mm) of precipitation.

When are the longest days in Oakley?

June has the longest days of the year in Oakley, with an average of 14.8h of daylight.

What are the months with the highest UV index in Oakley?

Months with the highest UV index in Oakley are June through August, with an average maximum UV index of 6.

What is the warmest month in Oakley?

With an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 56.5°F (13.6°C), July is the warmest month in Oakley.

What is the driest month in Oakley?

July and August are months with the least rain in Oakley, California, when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Oakley?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

What is the least humid month in Oakley?

September is the least humid month in Oakley, California, with an average relative humidity of 52%.

What is the coldest month in Oakley?

December is the coldest month in Oakley, with an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41.7°F (5.4°C).

When does it snow in Oakley?

December is the only month when snow falls in Oakley.

When does it snow the most in Oakley?

The month with the most snowfall days in Oakley, California, is December when snow falls for 0.1 days.

What is the month with the shortest days in Oakley?

With an average of 9.6h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Oakley?

With an average of 5.8h of sunshine, December has the least sunshine of the year in Oakley, California.

Average temperature
Oakley, CA

Average temperature - Oakley, CA

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure
Oakley, CA

Average pressure - Oakley, CA

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed
Oakley, CA

Average wind speed - Oakley, CA

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average rainfall
Oakley, CA

Average rainfall - Oakley, CA

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Oakley, CA

Average rainfall days - Oakley, CA

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days
Oakley, CA

Average snowfall days - Oakley, CA

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Oakley, CA

Average daylight / Average sunshine - Oakley, CA

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days
Oakley, CA

Average sunshine days - Oakley, CA

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index
Oakley, CA

Average UV index - Oakley, CA

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

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Average visibility
Oakley, CA

Average visibility - Oakley, CA

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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