Seattle, Washington — After days of unusually warm temperatures and heightened wildfire concerns, the Pacific Northwest is preparing for a dramatic weather shift that could make the first weekend of summer feel more like early fall.
Forecasters say temperatures across parts of Washington and Oregon will surge into the upper 80s and lower 90s through the middle of the week before a strong weather system arrives, bringing cooler air, clouds, and the return of much-needed rainfall.
The sharp transition is expected to affect communities throughout the region, including major population centers along the Interstate 5 corridor.
Heat Builds Across Seattle and Portland
Residents in Seattle, Portland, and surrounding communities are expected to experience some of the warmest weather of the month before the pattern changes.
Temperatures are forecast to climb 5 to 15 degrees above normal for late June, with highs reaching the upper 80s and lower 90s in some locations.
While this warm spell is not expected to rival the intense heat wave experienced earlier this month, officials warn that it could still pose health risks, especially for people without access to air conditioning and those spending extended periods outdoors.
The warm conditions are also expected to affect outdoor events throughout the region.
Fans attending Wednesday’s international soccer match between Bosnia-Herzegovina and Qatar in Seattle could face temperatures in the lower 80s, while RealFeel® temperatures may approach 90 degrees during the hottest part of the afternoon.
Officials are encouraging attendees to stay hydrated and take precautions to avoid heat-related illnesses.
Major Pattern Change Arrives Late Week
The summer heat will not last long.
Meteorologists say a developing storm system and a significant dip in the jet stream will push much cooler air into the Pacific Northwest beginning Thursday and continuing into Friday.
The result will be a dramatic temperature drop across the region. By Friday, many communities could experience temperatures that are 20 to 25 degrees cooler than they were just days earlier.
Seattle’s first official summer weekend may feel unusually chilly, with daytime highs expected to remain in the mid-60s. Forecasters noted that temperatures could approach record-cool territory for late June.
Portland is expected to experience a similar cooldown, with afternoon highs only reaching the middle to upper 60s by the weekend.
Rain Returns After Nearly Two Weeks
In addition to cooler temperatures, rainfall is expected to make a return to parts of the Pacific Northwest. Showers are forecast across portions of Washington, Oregon, and Montana as the storm system moves inland.
The precipitation will end a notably dry stretch that has persisted across much of the region.
According to forecasters, Seattle last recorded measurable precipitation on June 10, while Portland’s most recent rainfall occurred on June 9.
By the weekend, steadier rain could develop across interior sections of the Northwest as the weather system strengthens. At the highest elevations of the northern Rockies, some snowfall may even be possible.
Wildfire Concerns Remain Before Rain Arrives
Before the cooler and wetter pattern takes hold, wildfire concerns remain elevated across parts of the region.
Forecasters warn that increasing winds ahead of the incoming storm could create dangerous fire conditions east of the Cascade Mountains and throughout portions of the northern Rockies.
Dry thunderstorms are also possible and could trigger new wildfire starts through lightning strikes.
While the Pacific Northwest may receive some relief from rainfall, the highest wildfire threat through the end of the week is expected to remain across portions of Nevada, Utah, and Arizona.
These areas continue to face a combination of hot temperatures, gusty winds, dry conditions, and limited rainfall, all factors that contribute to increased fire danger.
Cooler Weekend Ahead for the Northwest
After a hot start to the week, residents across the Pacific Northwest can expect a noticeably different feel by the weekend.
Instead of summer-like heat, many communities will be reaching for jackets and rain gear as cooler temperatures and unsettled weather settle into the region.
For some areas, it may feel more like September than June as one of the most dramatic weather swings of the season unfolds.
Are you looking forward to the cooler temperatures, or would you rather keep the summer heat around a little longer? Share your thoughts and local weather conditions in the comments below.
