Zip 94558 (Napa, CA) Climate

Napa, CA is an area with a mild climate due to its proximity to the Pacific Ocean. It has warm and dry summers with temperatures usually around 75-85 degrees Fahrenheit, occasionally reaching into the 90s. Winters in Napa are generally mild with temperatures around 50-60 degrees. Rainfall is relatively scarce, but it does rain throughout the year. The area usually experiences foggy and cool weather during the night and morning hours during the summer months.

Napa (zip 94558), California gets 27 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Napa (zip 94558) averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 263 sunny days per year in Napa (zip 94558). The US average is 205 sunny days.

Napa (zip 94558) gets some kind of precipitation, on average, 69 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 82 degrees
Winter Low: the January low is 38
Rain: averages 27 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 94558 zip code is 8.4 (10=best), which means it is more comfortable than most places in California.

9.5 Summer - 7.2 Winter

July, September and August are the most pleasant months in the 94558 zip code, while January and December are the least comfortable months.

Climate	Napa, California	United States
	27.4 in.	38.1 in.
	0.0 in.	27.8 in.
	68.6 days	106.2 days
	263 days	205 days
	82.4°	85.8°
	37.7°	21.7°
	8.4	7
	5.4	4.3
	64 ft.	2443 ft.

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.

August is the hottest month for the 94558 zip code with an average high temperature of 83.1°, which ranks it as cooler than most places in California. In the 94558 zip code, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 94558 zip code are October, May and June.

In the 94558 zip code, there are 24.8 days annually when the high temperature is over 90°, which is cooler than most places in California.

December has the coldest nighttime temperatures for the 94558 zip code with an average of 37.4°. This is about average compared to other places in California.

In the 94558 zip code, there are 21.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In the 94558 zip code, 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 is low in the 94558 zip code, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

February is the wettest month in the 94558 zip code with 5.4 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 27.4 inches in the 94558 zip code means that it is wetter than most places in California.

December is the rainiest month in the 94558 zip code with 12.0 days of rain, and July is the driest month with only 0.1 rainy days. There are 68.6 rainy days annually in the 94558 zip code, which is rainier than most places in California. The rainiest season is Spring when it rains 50% 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 94558 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 94558 zip code.

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