Zip 94509 (Antioch, CA) Climate

Antioch, CA (94509) has a mild Mediterranean climate with hot, dry summers and cool, wet winters. The average high temperature during summer months is around 84 degrees Fahrenheit with lows of around 56 degrees Fahrenheit. During the winter months, the average high temperature is around 53 degrees Fahrenheit with lows of around 39 degrees Fahrenheit. The city generally receives about 18 inches of rain each year, with most of it falling between late October and April due to the rainy season in California. In addition to precipitation, Antioch also experiences occasional strong winds and clear skies throughout the year.

Antioch (zip 94509), California gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Antioch (zip 94509) 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 Antioch (zip 94509). The US average is 205 sunny days.

Antioch (zip 94509) gets some kind of precipitation, on average, 57 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 40
Rain: averages 16 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 94509 zip code is 8.6 (10=best), which means it is more comfortable than most places in California.

9.2 Summer - 7.4 Winter

June, May and October are the most pleasant months in the 94509 zip code, while January and December are the least comfortable months.

Climate	Antioch, California	United States
	Unlock	38.1 in.
	0.0 in.	Unlock
	Unlock	106.2 days
	263 days	Unlock
	89.0°	85.8°
	Unlock	21.7°
	8.6	Unlock
	Unlock	4.3
	54 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 94509 zip code with an average high temperature of 89.0°, which ranks it as about average compared to other places in California. In the 94509 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 94509 zip code are May, October and June.

In the 94509 zip code, there are 46.9 days annually when the high temperature is over 90°, which is about average compared to other places in California.

January has the coldest nighttime temperatures for the 94509 zip code with an average of 39.7°. This is warmer than most places in California.

In the 94509 zip code, there are 6.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In the 94509 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 in the 94509 zip code 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 August, July and June.

February is the wettest month in the 94509 zip code with 3.1 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 15.8 inches in the 94509 zip code means that it is about average compared to other places in California.

January is the rainiest month in the 94509 zip code with 10.3 days of rain, and July is the driest month with only 0.0 rainy days. There are 56.7 rainy days annually in the 94509 zip code, which is about average compared to other places in California. The rainiest season is Spring when it rains 53% of the time and the driest is Autumn with only a 1% chance of a rainy day.

There is rarely any recorded snowfall in the 94509 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 94509 zip code.

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