Climate and monthly weather forecast
Oakville, CA

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Weather in January

January is a refreshing winter month in Oakville, California, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 41.2°F (5.1°C). Oakville's January average high-temperature settles at a moderate 55.9°F (13.3°C), showing a near match with the preceding month. Weather in January »

Weather in February

February, the last month of the winter in Oakville, is another mild month, 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). Transitioning from January to February, Oakville observes an average high-temperature of a still refreshing 59°F (15°C), differing subtly from the previous month. Weather in February »

Weather in March

March, the first month of the spring in Oakville, is an enjoyable month, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 61.3°F (16.3°C). The average high-temperature during March is an enjoyable 61.3°F (16.3°C), almost matching the conditions of the preceding month. Weather in March »

Weather in April

April in Oakville, California, is a pleasant spring month, with an average temperature ranging between max 68°F (20°C) and min 44.4°F (6.9°C). Oakville perceives a slight temperature ascent during April, with average high-temperatures adjusting from a comfortable 61.3°F (16.3°C) in March to a pleasant 68°F (20°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Oakville, California, with an average temperature varying between 48.2°F (9°C) and 73.6°F (23.1°C). As April transitions into May, Oakville notices a gentle rise in the average high-temperature, transitioning from a pleasant 68°F (20°C) to a moderately hot 73.6°F (23.1°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Oakville, California, with an average temperature varying between 53.2°F (11.8°C) and 82.8°F (28.2°C). With the onset of June, Oakville's weather sees a temperature rise, transitioning 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 an average temperature fluctuating between 86.5°F (30.3°C) and 55°F (12.8°C). July is the warmest month, exhibiting average temperatures of 86.5°F (30.3°C) at the peak and 55°F (12.8°C) at the base. The heat index in July is calculated to be a tropical 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Oakville, is another hot month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 86.2°F (30.1°C). Oakville, California, experiences a subtle adjustment in high-temperatures to a still tropical 86.2°F (30.1°C) with the onset of August, maintaining near parity with July's 86.5°F (30.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Oakville, California, with an average temperature varying between 55.2°F (12.9°C) and 84°F (28.9°C). During September, Oakville records an average high-temperature of a warm 84°F (28.9°C), marking a slight divergence from August's 86.2°F (30.1°C). Weather in September »

Weather in October

October, the same as September, is another warm 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). Oakville's average high-temperature decreases in October, falling from 84°F (28.9°C) in September to a still warm 74.5°F (23.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in Oakville, California, with an average temperature fluctuating between 45.1°F (7.3°C) and 63.3°F (17.4°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a warm 74.5°F (23.6°C) in October to a comfortable 63.3°F (17.4°C). Weather in November »

Weather in December

December, the first month of the winter in Oakville, is still a cool month, with an average temperature ranging between max 54.5°F (12.5°C) and min 40.1°F (4.5°C). December is the month that records the lowest temperatures, with averages ranging from a high of 54.5°F (12.5°C) to a low of 40.1°F (4.5°C). Weather in December »

Frequently asked questions

How much does it rain in Oakville?

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

What is the month 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. Rain falls for 9.4 days and accumulates 3.43" (87mm) of precipitation.

What is the most humid month in Oakville?

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

When is Daylight Saving Time (DST) in Oakville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Oakville?

June has the longest days of the year in Oakville, California, with an average of 14h and 48min of daylight.

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

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

What time of the year is the hottest in Oakville?

July registers as the month with the average highest temperatures, reaching 86.5°F (30.3°C) at its peak and 55°F (12.8°C) at the lowest.

What is the driest month in Oakville?

The months with the least rainfall in Oakville, California, are July and August Rain falls for 1.2 days and accumulates 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?

With an average relative humidity of 54%, September is the least humid month in Oakville.

What is the coldest time of year in Oakville?

December is the month when Oakville sees the average lowest temperatures, with a high of 54.5°F (12.5°C) and a low of 40.1°F (4.5°C).

What is the month with the shortest days in Oakville?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Oakville.

What is the month with the least sunshine in Oakville?

With an average of 5.6h of sunshine, December has the least sunshine of the year in Oakville, California.

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).

Average pressure
Oakville, CA

Average pressure - Oakville, CA

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

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).

Average humidity
Oakville, CA

Average humidity - Oakville, CA

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (54%).

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").

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).

Average daylight / Average sunshine
Oakville, CA

Average daylight / Average sunshine - Oakville, CA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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).

Average UV index
Oakville, CA

Average UV index - Oakville, CA

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

Average visibility
Oakville, CA

Average visibility - Oakville, CA

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).

Oakville, California, USA

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