Climate and monthly weather forecastOakville, CA
Climate and monthly weather forecast
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 »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Oakville, California, during the entire year, the rain falls for 77.8 days and collects up to 16.02" (407mm) of precipitation.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
February is the month with the most rainfall. Rain falls for 9.4 days and accumulates 3.43" (87mm) of precipitation.
The most humid month is March, with an average relative humidity of 76%.
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.
June has the longest days of the year in Oakville, California, with an average of 14h and 48min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
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.
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.
With an average of 12h of sunshine, July has the most sunshine of the year in Oakville.
With an average relative humidity of 54%, September is the least humid month 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).
With an average of 9h and 30min of daylight, December has the shortest days of the year 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
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 in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
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 in January:
4.5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.4mph - Average wind speed in April:
5.8mph - Average wind speed in May:
6mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.6mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4.7mph
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
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 in January:
3.03" - Average rainfall in February:
3.43" - Average rainfall in March:
2.52" - Average rainfall in April:
0.79" - Average rainfall in May:
0.83" - Average rainfall in June:
0.16"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.91" - Average rainfall in November:
1.46" - Average rainfall in December:
2.76"
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 in January:
10.3 days - Average rainfall days in February:
9.4 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
8.3 days - Average rainfall days in May:
5.6 days - Average rainfall days in June:
2.4 days
- Average rainfall days in July:
1.2 days - Average rainfall days in August:
0.9 days - Average rainfall days in September:
2.1 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
11.4 days
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 in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 24min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 36min
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 in January:
19.6 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
20.8 days - Average sunshine days in May:
24.1 days - Average sunshine days in June:
26.9 days
- Average sunshine days in July:
29.4 days - Average sunshine days in August:
29.3 days - Average sunshine days in September:
26.9 days - Average sunshine days in October:
25.5 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
18.7 days
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
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 cloud cover
Oakville, CA
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).
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).
