Vallejo
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Vallejo, CA

A colorful orange sunset skyline seen over the Napa River and Bridge in Vallejo, California, with a near view of the town and a far view of scenic hills
A colorful orange sunset skyline seen over the Napa River and Bridge in Vallejo, California, with a near view of the town and a far view of scenic hills
January, the same as December, in Vallejo, California, is another mild winter month, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 38.3°F (3.5°C). January is the coldest month, with an average high-temperature of 57°F (13.9°C) and an average low-temperature of 38.3°F (3.5°C). Weather in January »
The last month of the winter, February, is a comfortable month in Vallejo, California, with average temperature fluctuating between 61.5°F (16.4°C) and 40.8°F (4.9°C). In Vallejo, the average high-temperature in February is almost the same as in January - an enjoyable 61.5°F (16.4°C). Weather in February »

March, the first month of the spring, in Vallejo, is still a comfortable month, with average temperature ranging between min 42.1°F (5.6°C) and max 65.1°F (18.4°C). In March, the average high-temperature is practically the same as in February - a still comfortable 65.1°F (18.4°C). Weather in March »

April in Vallejo, California, is a pleasant spring month, with average temperature varying between 69.6°F (20.9°C) and 43.7°F (6.5°C). In April, the average high-temperature is essentially the same as in March - a pleasant 69.6°F (20.9°C). Weather in April »

May, the last month of the spring, in Vallejo, is a moderately hot month, with average temperature fluctuating between 47.7°F (8.7°C) and 74.5°F (23.6°C). In May, the average high-temperature is practically the same as in April - a moderately hot 74.5°F (23.6°C). Weather in May »

June, the first month of the summer, in Vallejo, is also a moderately hot month, with average temperature ranging between min 51.3°F (10.7°C) and max 79.9°F (26.6°C). In Vallejo, California, the average high-temperature in June marginally rises, from 74.5°F (23.6°C) in May, to a still warm 79.9°F (26.6°C). Weather in June »

July, the same as June, is another warm summer month in Vallejo, California, with average temperature fluctuating between 81.9°F (27.7°C) and 53.4°F (11.9°C). In July, the average high-temperature is almost the same as in June - a still warm 81.9°F (27.7°C). Weather in July »

The last month of the summer, August, is another warm month in Vallejo, California, with average temperature varying between 53.1°F (11.7°C) and 81.7°F (27.6°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 81.7°F (27.6°C). Weather in August »

The first month of the autumn, September, is still a warm month in Vallejo, California, with average temperature fluctuating between 82°F (27.8°C) and 51.4°F (10.8°C). The warmest month is September, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 51.4°F (10.8°C). Weather in September »

October, like September, in Vallejo, California, is another warm autumn month, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 47.8°F (8.8°C). In October, the average high-temperature slightly decreases, from 82°F (27.8°C) in September, to a still moderately hot 76.6°F (24.8°C). Weather in October »

The last month of the autumn, November, is also an enjoyable month in Vallejo, California, with temperature in the range of an average low of 42.6°F (5.9°C) and an average high of 65.8°F (18.8°C). In Vallejo, California, the average high-temperature in November drops, from a warm 76.6°F (24.8°C) in October, to an enjoyable 65.8°F (18.8°C). Weather in November »

December, the first month of the winter, in Vallejo, is still a mild month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 57.6°F (14.2°C). In Vallejo, the average high-temperature marginally drops, from a comfortable 65.8°F (18.8°C) in November, to a mild 57.6°F (14.2°C). Weather in December »

What is the coldest month in Vallejo?

January is the coldest month in Vallejo, California, with an average high-temperature of 57°F (13.9°C) and an average low-temperature of 38.3°F (3.5°C).

How many days does it rain in Vallejo?

In Vallejo, during the entire year, the rain falls for 63 days and collects up to 24.8" (629mm) of precipitation.

What is the wettest month in Vallejo?

The month with the most rainfall is January when the rain falls for 11 days and typically aggregates up to 5.2" (131mm) of precipitation.

When are the longest days in Vallejo?

With an average of 14.8h of daylight, June has the longest days of the year.

What is the driest month in Vallejo?

The only month without rainfall in Vallejo, California, is July.

When does it rain in Vallejo?

Months with rainfall in Vallejo, California, are January through June, August through December.

What is the warmest month in Vallejo?

With an average high-temperature of 82°F (27.8°C) and an average low-temperature of 51.4°F (10.8°C), September is the warmest month.

What is the month with the shortest days in Vallejo?

With an average of 9.6h of daylight, December has the shortest days of the year in Vallejo.
Average temperature - Vallejo, CA
Average rainfall - Vallejo, CA
Average rainfall days - Vallejo, CA
Average daylight - Vallejo, CA

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