Tri-City, OR Weather


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The most pleasant months of the year for Tri-City are June, September and May. In Tri-City, there are 3 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Tri-City with an average high temperature of 85.7°, which ranks it as warmer than most places in Oregon. December is the snowiest month in Tri-City with 0.6 inches of snow, and 3 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.

Today's Weather - Tri-City, OR

11 AM PST

Rain Showers Likely

48°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayRain Showers Likely55° / 43°S 6 mph
SundayChance Rain Showers61° / 40°WSW 2 to 12 mph
MondayLight Rain Likely56° / 37°W 2 to 9 mph
TuesdayChance Light Rain57° / 36°WSW 3 to 9 mph
WednesdayMostly Sunny then Slight Chance Light Rain66° / 40°NNE 2 to 9 mph
ThursdayChance Light Rain70° / 43°NNE 3 to 8 mph
FridayMostly Sunny74° / 47°N 3 to 9 mph

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 36
Rain: averages 35 inches of rain a year
Snow: averages 2 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Tri-City area is 9.2 (10=best), which means it is more comfortable than most places in Oregon.

9.2 / 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
January50° 36°
February55° 37°
March59° 39°
April64° 41°
May71° 46°
June77° 51°
July85° 55°
August86° 54°
September80° 49°
October68° 44°
November55° 40°
December48° 36°
Hot, Freezing, Rainy, Snowy Days: Tri-City
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January07180
February06160
March03170
April01160
May10120
June2070
July9030
August10030
September5050
October01100
November02190
December06190

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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