Colusa County, CA Climate

Colusa County, CA has a hot-summer Mediterranean climate with mild to warm winters and hot dry summers. Winters are generally cool, with temperatures below freezing on some nights, while summertime temperatures are often in the 90s or higher. Rainfall is spread fairly evenly throughout the year, with occasional heavy rains bringing flooding issues to some areas of the county. Snowfall is rare in Colusa County but can occur occasionally during winter months. The area typically enjoys bright sunny days during the majority of the year without much cloud cover or fog.

Colusa County, California gets 24 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Colusa County averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 261 sunny days per year in Colusa County. The US average is 205 sunny days.

Colusa County gets some kind of precipitation, on average, 59 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 95 degrees
Winter Low: the January low is 37
Rain: averages 24 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Colusa County is 8.1 (10=best), which means it is about average compared to other places in California.

8 Summer - 7.1 Winter

May, October and April are the most pleasant months in Colusa County, while January and December are the least comfortable months.

Climate	Colusa, California	United States
	24.3 in.	38.1 in.
	0.2 in.	27.8 in.
	59.1 days	106.2 days
	261 days	205 days
	94.5°	85.8°
	37.2°	21.7°
	8.1	7
	5.1	4.3
	793 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.

July is the hottest month for Colusa County with an average high temperature of 94.5°, which ranks it as warmer than most places in California. In Colusa County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Colusa County are October, May and April.

In Colusa County, there are 83.6 days annually when the high temperature is over 90°, which is hotter than most places in California.

December has the coldest nighttime temperatures for Colusa County with an average of 37.0°. This is about average compared to other places in California.

In Colusa County, there are 22.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Colusa County, 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 Colusa County 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 Colusa County with 5.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 24.3 inches in Colusa County means that it is wetter than most places in California.

January is the rainiest month in Colusa County with 10.5 days of rain, and July is the driest month with only 0.1 rainy days. There are 59.1 rainy days annually in Colusa County, which is about average compared to other places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 3% chance of a rainy day.

An annual snowfall of 0.2 inches in Colusa County means that it is snowier than most places in California. December is the snowiest month in Colusa County with 0.1 inches of snow, and no months of the year have significant snowfall.

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