Zip 91790 (West Covina, CA) Climate

West Covina, CA is located in the southern portion of the state, and its climate is typically hot and dry throughout the year. Summers are usually warm with temperatures reaching into the 90s, while winters tend to be milder with temperatures rarely dropping below freezing. Rainfall is minimal throughout the year, however, light showers can occur during the spring months. The area also experiences strong winds throughout most of the year due to its close proximity to other mountains and valleys in the region. Overall, West Covina enjoys a pleasant climate that allows for comfortable activities such as hiking and outdoor recreation year-round.

West Covina (zip 91790), California gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.

West Covina (zip 91790) averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 281 sunny days per year in West Covina (zip 91790). The US average is 205 sunny days.

West Covina (zip 91790) gets some kind of precipitation, on average, 33 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 87 degrees
Winter Low: the January low is 46
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 91790 zip code is 9.2 (10=best), which means it is one of the most pleasant places in California.

9.4 Summer - 8.8 Winter

June, May and October are the most pleasant months in the 91790 zip code, while January and February are the least comfortable months.

Climate	West Covina, California	United States
	16.1 in.	38.1 in.
	0.0 in.	27.8 in.
	32.7 days	106.2 days
	281 days	205 days
	86.7°	85.8°
	45.8°	21.7°
	9.2	7
	6.2	4.3
	381 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 91790 zip code with an average high temperature of 88.4°, which ranks it as about average compared to other places in California. In the 91790 zip code, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 91790 zip code are May, April and October.

In the 91790 zip code, there are 42.6 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 91790 zip code with an average of 45.1°. This is one of the warmest places in California.

In the 91790 zip code, there are 0.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In the 91790 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 91790 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 July, August and June.

February is the wettest month in the 91790 zip code with 3.9 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 61% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 16.1 inches in the 91790 zip code means that it is about average compared to other places in California.

February is the rainiest month in the 91790 zip code with 6.0 days of rain, and July is the driest month with only 0.3 rainy days. There are 32.7 rainy days annually in the 91790 zip code, which is less rainy 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 3% chance of a rainy day.

There is rarely any recorded snowfall in the 91790 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 91790 zip code.

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