Vallejo Metro Area, CA Climate

The Vallejo-Fairfield, CA Metro Area has a mild climate with warm summers and cool winters. The average summer temperatures range from the mid-60s to the upper 90s, while winter temperatures typically hover around 40 to 50 degrees. Rainfall is relatively light throughout the year, with an average of between 12 and 16 inches per year. Snow is rare in the area, although it can occur occasionally in the foothills of nearby mountains. Overall, given the mild temperatures and low precipitation rates, this area offers a great climate for outdoor activities throughout much of the year.

Vallejo Metro Area, California gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Vallejo Metro Area averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 285 sunny days per year in Vallejo Metro Area. The US average is 205 sunny days.

Vallejo Metro Area gets some kind of precipitation, on average, 64 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 89 degrees
Winter Low: the January low is 38
Rain: averages 23 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the Vallejo-Fairfield metro area is 8.3 (10=best), which means it is more comfortable than most places in California.

8.8 Summer - 7.2 Winter

May, October and June are the most pleasant months in the Vallejo-Fairfield metro area, while January and December are the least comfortable months.

Climate	Vallejo, California	United States
	Unlock	38.1 in.
	0.0 in.	Unlock
	Unlock	106.2 days
	285 days	Unlock
	89.1°	85.8°
	Unlock	21.7°
	8.3	Unlock
	Unlock	4.3
	174 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for the Vallejo-Fairfield metro area with an average high temperature of 89.1°, which ranks it as about average compared to other places in California. In the Vallejo-Fairfield metro area, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Vallejo-Fairfield metro area are May, October and April.

In the Vallejo-Fairfield metro area, there are 55.7 days annually when the high temperature is over 90°, which is about average compared to other places in California.

December has the coldest nighttime temperatures for the Vallejo-Fairfield metro area with an average of 38.3°. This is about average compared to other places in California.

In the Vallejo-Fairfield metro area, there are 14.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.

In the Vallejo-Fairfield metro area, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

Humidity in the Vallejo-Fairfield metro area is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

January is the wettest month in the Vallejo-Fairfield metro area with 4.6 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 59% of yearly precipitation and 0% occurs in Autumn, which is the driest season. The annual rainfall of 23.1 inches in the Vallejo-Fairfield metro area means that it is wetter than most places in California.

January is the rainiest month in the Vallejo-Fairfield metro area with 11.5 days of rain, and July is the driest month with only 0.1 rainy days. There are 64.1 rainy days annually in the Vallejo-Fairfield metro area, which is rainier than most places in California. The rainiest season is Spring when it rains 51% of the time and the driest is Autumn with only a 2% chance of a rainy day.

There is rarely any recorded snowfall in the Vallejo-Fairfield metro area, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the Vallejo-Fairfield metro area.

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