2025 Compare Climate & Weather:
Winthrop, WA vs Umatilla, OR

Highlights

On average, there are 195 sunny days per year in Umatilla. Winthrop averages 188 sunny days per year. The US average is 205 sunny days.

Umatilla, Oregon gets 9 inches of rain, on average, per year. Winthrop, Washington gets 21.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Umatilla averages 1.9 inches of snow per year. Winthrop averages 88.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Umatilla, Oregon
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 28.7
Rain: averages 9 inches of rain a year
Snow: averages 1.9 inches of snow a year

Winthrop, Washington
Summer High: the July high is around 84 degrees
Winter Low: the January low is 16.1
Rain: averages 21.2 inches of rain a year
Snow: averages 88.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Umatilla is 7.6 (10=best), which means it is one of the most pleasant places in Oregon.

The annual BestPlaces Comfort Index for Winthrop is 6.4 (10=best), which means it is one of the least comfortable places in Washington.

Today's Weather - Winthrop, WA

58°F

Today's Weather - Umatilla, OR

62°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Winthrop / Umatilla

August is the hottest month for Winthrop with an average high temperature of 84.1°, which ranks it as warmer than most places in Washington. In Winthrop, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Winthrop are June, September and July.

July is the hottest month for Umatilla with an average high temperature of 88.3°, which ranks it as warmer than most places in Oregon. In Umatilla, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Umatilla are September, June and May.

December has the coldest nighttime temperatures for Winthrop with an average of 15.1°. This is one of the coldest places in Washington.

December has the coldest nighttime temperatures for Umatilla with an average of 28.2°. This is colder than most places in Oregon.

In Winthrop, there are 19.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Umatilla, there are 30.3 days annually when the high temperature is over 90°, which is hotter than most places in Oregon.

In Winthrop, there are 171.2 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Washington.

In Umatilla, there are 83.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Oregon.

In Winthrop, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

In Umatilla, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Oregon.

December is the wettest month in Winthrop with 3.7 inches of rain, and the driest month is August with 0.6 inches. The wettest season is Spring with 43% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 21.2 inches in Winthrop means that it is drier than most places in Washington.


December is the wettest month in Umatilla with 1.3 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Spring with 36% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 9.0 inches in Umatilla means that it is one of the driest places in Oregon.

November is the rainiest month in Winthrop with 14.0 days of rain, and August is the driest month with only 4.4 rainy days. There are 103.1 rainy days annually in Winthrop, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 36% of the time and the driest is Autumn with only a 16% chance of a rainy day.

January is the rainiest month in Umatilla with 11.2 days of rain, and July is the driest month with only 2.3 rainy days. There are 81.3 rainy days annually in Umatilla, which is less rainy than most places in Oregon. The rainiest season is Spring when it rains 37% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 88.4 inches in Winthrop means that it is one of the snowiest places in Washington.

An annual snowfall of 1.9 inches in Umatilla means that it is less snowy than most places in Oregon.

December is the snowiest month in Winthrop with 31.8 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Umatilla with 0.6 inches of snow, and 3 months of the year have significant snowfall.