Monthly weather forecast and climate
Alviso, CA

Weather in January

January, the same as December, in Alviso, California, is another mild winter month, with average temperature fluctuating between 42.6°F (5.9°C) and 57.7°F (14.3°C). In Alviso, the average high-temperature is practically the same as in December - a still moderate 57.7°F (14.3°C). Weather in January »

Weather in February

February, the last month of the winter, in Alviso, is also a moderate month, with average temperature ranging between max 59.7°F (15.4°C) and min 42.8°F (6°C). In February, the average high-temperature is essentially the same as in January - a still mild 59.7°F (15.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a comfortable month in Alviso, California, with average temperature fluctuating between 43.5°F (6.4°C) and 62.4°F (16.9°C). In Alviso, California, the average high-temperature is almost the same as in February - a comfortable 62.4°F (16.9°C). Weather in March »

Weather in April

April, the same as March, is another enjoyable spring month in Alviso, California, with average temperature fluctuating between 66.7°F (19.3°C) and 45.3°F (7.4°C). In April, the average high-temperature is almost the same as in March - a still comfortable 66.7°F (19.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Alviso, California, with average temperature fluctuating between 71.4°F (21.9°C) and 48.9°F (9.4°C). In Alviso, the average high-temperature is essentially the same as in April - an agreeable 71.4°F (21.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Alviso, California, with average temperature fluctuating between 53.1°F (11.7°C) and 78.6°F (25.9°C). In June, the average high-temperature slightly increases, from an agreeable 71.4°F (21.9°C) in May, to a moderately hot 78.6°F (25.9°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Alviso, California, with average temperature fluctuating between 83.5°F (28.6°C) and 55.9°F (13.3°C). July is the warmest month, with an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 55.9°F (13.3°C). The average heat index is appraised at a tropical 86.2°F (30.1°C). Weather in July »

Weather in August

August, the last month of the summer, in Alviso, is also a moderately hot month, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 56.8°F (13.8°C). In Alviso, the average high-temperature is relatively the same as in July - a still warm 82.4°F (28°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Alviso, California, with average temperature fluctuating between 55.6°F (13.1°C) and 80.2°F (26.8°C). In Alviso, the average high-temperature is almost the same as in August - a still warm 80.2°F (26.8°C). Weather in September »

Weather in October

October, the same as September, in Alviso, California, is another pleasant autumn month, with average temperature varying between 72.9°F (22.7°C) and 52.7°F (11.5°C). In Alviso, the average high-temperature slightly decreases, from a warm 80.2°F (26.8°C) in September, to an agreeable 72.9°F (22.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Alviso, is another comfortable month, with average temperature varying between 63.7°F (17.6°C) and 46.9°F (8.3°C). In Alviso, the average high-temperature drops, from a pleasant 72.9°F (22.7°C) in October, to an enjoyable 63.7°F (17.6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a mild month in Alviso, California, with average temperature ranging between min 42.6°F (5.9°C) and max 56.3°F (13.5°C). December is the coldest month, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 42.6°F (5.9°C). Weather in December »
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FAQ

How much does it rain in Alviso?

In Alviso, during the entire year, the rain falls for 52.8 days and collects up to 4.06" (103mm) of precipitation.

What is the month with the lowest UV index in Alviso?

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

What is the most humid month in Alviso?

March is the most humid month in Alviso, California, with an average relative humidity of 73%.

What is the rainiest month in Alviso?

The month with the most rainfall in Alviso, California, is March when the rain falls for 9.9 days and typically aggregates up to 0.83" (21mm) of precipitation.

What is the driest month in Alviso?

Months with the least rainfall in Alviso are June through August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

When are the longest days in Alviso?

June has the longest days of the year in Alviso, California, with an average of 14.7h of daylight.

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

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

What is the warmest month in Alviso?

July is the warmest month in Alviso, with an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 55.9°F (13.3°C).

What is the least humid month in Alviso?

With an average relative humidity of 58%, July is the least humid month.

What month has the most sunshine in Alviso?

The month with the most sunshine is July, with an average of 12.1h of sunshine.

What is the coldest month in Alviso?

With an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 42.6°F (5.9°C), December is the coldest month in Alviso.

What is the month with the shortest days in Alviso?

December has the shortest days of the year in Alviso, with an average of 9.6h of daylight.

What is the month with the least sunshine in Alviso?

December has the least sunshine of the year in Alviso, California, with an average of 6h of sunshine.

Average temperature
Alviso, CA

Average temperature - Alviso, CA

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).

The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).

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Average pressure
Alviso, CA

Average pressure - Alviso, CA

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed
Alviso, CA

Average wind speed - Alviso, CA

The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).

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Average rainfall
Alviso, CA

Average rainfall - Alviso, CA

The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").

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Average rainfall days
Alviso, CA

Average rainfall days - Alviso, CA

The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).

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Average daylight / Average sunshine
Alviso, CA

Average daylight / Average sunshine - Alviso, CA

The month with the longest days is June (Average daylight: 14.7h).
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: 6h).

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Average sunshine days
Alviso, CA

Average sunshine days - Alviso, CA

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index
Alviso, CA

Average UV index - Alviso, 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
Alviso, CA

Average visibility - Alviso, 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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