Monthly weather forecast and climate
Oakville, CA

Weather in January

January is a mild winter month in Oakville, California, with average temperature varying between 55.9°F (13.3°C) and 41.2°F (5.1°C). In January, the average high-temperature is practically the same as in December - a mild 55.9°F (13.3°C). Weather in January »

Weather in February

The last month of the winter, February, is another mild month in Oakville, California, with temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 59°F (15°C). In February, the average high-temperature is practically the same as in January - a still mild 59°F (15°C). Weather in February »

Weather in March

March, the first month of the spring, in Oakville, is a comfortable month, with average temperature varying between 61.3°F (16.3°C) and 42.3°F (5.7°C). In Oakville, the average high-temperature is almost the same as in February - a comfortable 61.3°F (16.3°C). Weather in March »

Weather in April

April in Oakville, California, is a pleasant spring month, with average temperature varying between 44.4°F (6.9°C) and 68°F (20°C). In Oakville, the average high-temperature slightly increases, from an enjoyable 61.3°F (16.3°C) in March, to a pleasant 68°F (20°C). Weather in April »

Weather in May

May, the last month of the spring, in Oakville, is a warm month, with average temperature ranging between max 73.6°F (23.1°C) and min 48.2°F (9°C). In Oakville, the average high-temperature slightly increases, from a pleasant 68°F (20°C) in April, to a moderately hot 73.6°F (23.1°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Oakville, California, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 82.8°F (28.2°C). In June, the average high-temperature increases, from a moderately hot 73.6°F (23.1°C) in May, to a still warm 82.8°F (28.2°C). Weather in June »

Weather in July

July is a tropical summer month in Oakville, California, with average temperature varying between 55°F (12.8°C) and 86.5°F (30.3°C). July is the warmest month, with an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 55°F (12.8°C). In July, the average heat index is appraised at a tropical 91°F (32.8°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Oakville, California, with average temperature fluctuating between 86.2°F (30.1°C) and 55.4°F (13°C). In Oakville, the average high-temperature is relatively the same as in July - a still tropical 86.2°F (30.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Oakville, California, with average temperature ranging between max 84°F (28.9°C) and min 55.2°F (12.9°C). In Oakville, the average high-temperature in September is essentially the same as in August - a warm 84°F (28.9°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Oakville, California, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 74.5°F (23.6°C). In October, the average high-temperature drops, from 84°F (28.9°C) in September, to a still warm 74.5°F (23.6°C). Weather in October »

Weather in November

November, the last month of the autumn, in Oakville, is also an enjoyable month, with average temperature ranging between min 45.1°F (7.3°C) and max 63.3°F (17.4°C). In Oakville, the average high-temperature in November drops, from a moderately hot 74.5°F (23.6°C) in October, to an enjoyable 63.3°F (17.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Oakville, California, with average temperature ranging between min 40.1°F (4.5°C) and max 54.5°F (12.5°C). December is the coldest month, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 40.1°F (4.5°C). Weather in December »
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FAQ

How much does it rain in Oakville?

In Oakville, during the entire year, the rain falls for 77.8 days and collects up to 16.02" (407mm) of precipitation.

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

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

What is the wettest month in Oakville?

February is the month with the most rainfall in Oakville, California. Rain falls for 9.4 days and accumulates 3.43" (87mm) of precipitation.

What is the most humid month in Oakville?

March is the most humid month, with an average relative humidity of 76%.

When are the longest days in Oakville?

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

When is the highest UV index in Oakville?

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

What is the warmest month in Oakville?

With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 55°F (12.8°C), July is the warmest month in Oakville.

What is the driest month in Oakville?

July and August are months with the least rain when the rain falls for 1.2 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Oakville?

With an average of 12h of sunshine, July has the most sunshine of the year in Oakville.

What is the least humid month in Oakville?

The least humid month is September, with an average relative humidity of 54%.

What is the coldest month in Oakville?

With an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 40.1°F (4.5°C), December is the coldest month in Oakville.

What is the month with the shortest days in Oakville?

December has the shortest days of the year, with an average of 9.5h of daylight.

What is the month with the least sunshine in Oakville?

The month with the least sunshine is December, with an average of 5.6h of sunshine.

Average temperature
Oakville, CA

Average temperature - Oakville, CA

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (54.5°F).

The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

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Average pressure
Oakville, CA

Average pressure - Oakville, CA

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

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Average wind speed
Oakville, CA

Average wind speed - Oakville, CA

The windiest month (with the highest average wind speed) is May (6mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

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Average rainfall
Oakville, CA

Average rainfall - Oakville, CA

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

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Average rainfall days
Oakville, CA

Average rainfall days - Oakville, CA

The month with the highest number of rainy days is March (13.9 days).
The month with the least rainy days is August (0.9 days).

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Average daylight / Average sunshine
Oakville, CA

Average daylight / Average sunshine - Oakville, CA

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

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
Oakville, CA

Average sunshine days - Oakville, CA

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).

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Average UV index
Oakville, CA

Average UV index - Oakville, 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
Oakville, CA

Average visibility - Oakville, 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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