Zip 98850 (Rock Island, WA) Climate

The climate in 98850 Rock Island, WA is characterized by warm and dry summers and cold winters. Average temperatures range from the mid-30s to the mid-60s during the year, with an average high of 68 degrees Fahrenheit in July and an average low of 32 degrees Fahrenheit in January. Precipitation is fairly moderate throughout the year, with around 11 inches of rain annually. Snowfall is relatively uncommon, but on average there are 4 inches of snow each winter.

Rock Island (zip 98850), Washington gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Rock Island (zip 98850) averages 60 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Rock Island (zip 98850). The US average is 205 sunny days.

Rock Island (zip 98850) gets some kind of precipitation, on average, 78 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 85 degrees
Winter Low: the January low is 24
Rain: averages 14 inches of rain a year
Snow: averages 60 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 98850 zip code is 7.1 (10=best), which means it is about average compared to other places in Washington.

9.3 Summer - 4.1 Winter

August, July and June are the most pleasant months in the 98850 zip code, while December and January are the least comfortable months.

Climate	Rock Island, Washington	United States
	Unlock	38.1 in.
	60.0 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	85.2°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	1971 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 98850 zip code with an average high temperature of 85.2°, which ranks it as warmer than most places in Washington. In the 98850 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 98850 zip code are June, September and August.

In the 98850 zip code, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

December has the coldest nighttime temperatures for the 98850 zip code with an average of 22.8°. This is colder than most places in Washington.

In the 98850 zip code, there are 128.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In the 98850 zip code, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

Humidity is low in the 98850 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.

December is the wettest month in the 98850 zip code with 2.4 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 44% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 13.9 inches in the 98850 zip code means that it is drier than most places in Washington.

December is the rainiest month in the 98850 zip code with 11.4 days of rain, and August is the driest month with only 2.3 rainy days. There are 78.3 rainy days annually in the 98850 zip code, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 60.0 inches in the 98850 zip code means that it is one of the snowiest places in Washington. December is the snowiest month in the 98850 zip code with 21.8 inches of snow, and 7 months of the year have significant snowfall.

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