Zip 99338 (Kennewick, WA) Weather


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The most pleasant months of the year for the 99338 zip code are September, June and May. In the 99338 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 99338 zip code with an average high temperature of 89.0°, which ranks it as one of the hottest places in Washington. December is the snowiest month in the 99338 zip code with 1.7 inches of snow, and 3 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.

Today's Weather - Kennewick, WA

10 AM PST

Sunny

49°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodaySunny64° / 39°N 13 mph
SaturdaySunny then Slight Chance Rain Showers66° / 43°N 6 to 12 mph
SundaySunny62° / 39°SW 15 to 25 mph
MondaySunny64° / 44°N 6 to 10 mph
TuesdayMostly Sunny69° / 47°N 6 to 10 mph
WednesdayPartly Sunny69° / 46°SW 10 to 15 mph
ThursdayPartly Sunny65° / 45°SW 14 mph

Weather Highlights

Summer High: the July high is around 89 degrees
Winter Low: the January low is 28
Rain: averages 9 inches of rain a year
Snow: averages 4 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Kennewick (zip 99338) area is 9 (10=best), which means it is more comfortable than most places in Washington.

9 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January41° 28°
February48° 30°
March58° 34°
April66° 40°
May74° 47°
June81° 53°
July89° 58°
August88° 57°
September79° 49°
October65° 40°
November50° 33°
December39° 27°
Hot, Freezing, Rainy, Snowy Days: Kennewick
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January021111
February01780
March01180
April0470
May2170
June4050
July15030
August13020
September2030
October0560
November013100
December022111

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.

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