Cold weather forecast for Tri-Cities, WA. Snow on I-90

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A blast of arctic air brings the coldest temperatures in nearly two months to the Tri-Cities.

And the National Weather Service predicts a 30% chance of precipitation in the Tri-Cities on Presidents Day, falling as rain or even snow.

The lowest elevation for snowfall in the Tri-Cities area on Monday was 400 feet, the elevation of much of the Tri-Cities.

If there is snow, less than 1 inch is expected.

Arctic air moving into eastern Washington is expected to bring the coldest temperatures since late December and early January.

Windy weather will make temperatures even colder.

Highs could be just below freezing on Tuesday and Wednesday, before warming to around 40 on Thursday and Friday, then in the mid-40s on Saturday and Sunday.

Tuesday night is expected to be the coldest night of the week with a low forecast of around 15 degrees in the Tri-Cities.

Lows were expected to be around 20 degrees Monday, Wednesday and Thursday night, with a warming to 27 Saturday night.

Normal highs for the Tri-Cities in January are around 41 degrees and normal lows are a few degrees below freezing at around 29.

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The temperature could drop as much as 15 degrees in the Tri-Cities this week. Courtesy of the National Weather Service

Gusts of up to 26mph were forecast for Monday evening, increasing to 30mph on Tuesday.

The wind chill factor could be as low as 5 on Monday evening and 17 during the day on Tuesday.

Travel forecast

Travelers between the Tri-Cities from western Washington should have relatively good roads.

Only one to two inches were forecast Monday for Snoqualmie Pass on Interstate 90 in Washington, with no more snow until perhaps Saturday evening. The state Department of Transportation required chains on all vehicles except all-wheel-drive vehicles Monday morning due to passing conditions.

However, travelers should be prepared for very cold weather with warm clothing, including caps and gloves; blankets in the car; and emergency food and water.

Wind chill at I-90 Snoqualmie Pass could be as low as minus 8 on Tuesday and minus 10 Tuesday evening.

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A winter storm warning was issued until 4 p.m. Monday for some of the Blue Mountains on Interstate 84 in eastern Oregon.

A total of 1 to 3 inches was expected Monday in Meacham, Oregon, in the Blue Mountains about 30 miles east of Pendleton.

No more snow is forecast for the rest of the week there, but travelers should prepare for overnight lows in the single digits and in the teens.

This story was originally published February 21, 2022 11:21 a.m.

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Senior Writer Annette Cary covers Hanford, energy, environment, science and health for the Tri-City Herald. She was a journalist for over 30 years in the Pacific Northwest.

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