Fox News Weather Center

Northwestern US: Temperatures to soar to record-challenging levels by late week

Summerlike warmth building across the northwestern United States throughout the week will peak at near-record levels by late week.

"It will feel like summer in the Northwest as a large area of high pressure pumps warm air into the region throughout the week," AccuWeather Meteorologist Brandon Zapolski said.

Daytime temperatures will climb 15-25 degrees Fahrenheit from the beginning of the week to the end of the week in cities such as Seattle and Spokane, Washington; Portland, Eugene and Medford, Oregon; and Boise, Idaho.

Highs in the 70s and 80s will be common across the region during the week. A few locations could surpass 90 in southern Oregon.

This warm spell will continue the trend of above-normal temperatures so far for the month of May.

Friday will likely be the warmest day of the stretch, Zapolski added.

Seattle could set a new record on Friday as highs are forecast to reach the mid-80s. The old record of 84 has held firm since 1973.

Most locations may fall just a few degrees shy of record levels.

Weather-related delays should not be an issue at the Seattle Mariners home games this week as dry, sunny weather will accompany the warmth.

Area residents will have an excellent opportunity to mow the lawn, plant spring flowers or finish outdoor construction projects.

People are encouraged to apply sunscreen and drink plenty of water for any prolonged outdoor activities.

An end to the dry and warm weather is forecast to arrive on Saturday as a storm presses ashore, Zapolski explained.

Highs will be trimmed by the increased cloud cover and wet weather but will remain above normal through the weekend.

Latest indications are that warm and dry conditions may be the theme across the region into the summer months.