Umatilla County, Oregon 

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Weather in Umatilla County, Oregon

The most pleasant months of the year for Umatilla County are September, June and May. In Umatilla County, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Umatilla County with an average high temperature of 88.4°, which ranks it as warmer than most places in Oregon. December is the snowiest month in Umatilla County with 4.7 inches of snow, and 5 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.


Today's Weather - Umatilla, OR

7 AM PST

Patchy Freezing Fog

34°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayPatchy Freezing Fog40° / 27°SE 9 mph
M.L. King Jr. DayPatchy Freezing Fog then Mostly Cloudy38° / 32°SE 8 mph
TuesdayLight Rain Likely41° / 33°S 12 mph
WednesdayChance Rain And Snow46° / 40°S 7 mph
ThursdayChance Light Rain46° / 36°SE 6 mph
FridayChance Light Rain49° / 37°S 6 mph
SaturdayChance Light Rain49° / 37°S 7 mph

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 27
Rain: averages 16 inches of rain a year
Snow: averages 14 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Umatilla County area is 7.3 (10=best), which means it is more comfortable than most places in Oregon.

7.3 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7. 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° 27°
February47° 28°
March56° 33°
April63° 38°
May71° 44°
June79° 50°
July88° 55°
August88° 54°
September78° 46°
October65° 37°
November50° 32°
December40° 26°
Hot, Freezing, Rainy, Snowy Days: Umatilla
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January022122
February018102
March013111
April06100
May1290
June3070
July14030
August13030
September3140
October0870
November015131
December023123

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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MAPS OF UMATILLA COUNTY, OREGON
ZIP CODES IN UMATILLA COUNTY, OREGON
97838, 97801, 97862, 97882, 97875, 97868, 97886, 97813, 97826, 97810, ... 13 more

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