- **Q: How warm will it get before the cool down?
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ARTICLE DETAIL
Pacific Northwest Weather Pattern Shift: Warmth Followed by Cooler Temperatures and Showers | Storm Chances and Warm Temperatures Across the Inland Northwest | Storm Chances and Warmer Temperatures Across the Pacific Northwest and Colorado | Arizona Weather: Cool Down, Showers, and Wind Gusts Expected | Reno and Tahoe Sizzle with Record-Breaking Heat in May 2026 | Chicago Area Weather: From Frost to 80s and Possible Storms | Chicago Area Weather Alert: Dust Storms and Evening Storms | Tornado Warnings in Pasco County and St. James Parish | Super El Niño Impacts and Hurricane Season 2026: What to Expect | Pacific Northwest Weather Pattern Shift: Warmth Followed by Cooler Temperatures and Showers | Storm Chances and Warm Temperatures Across the Inland Northwest | Storm Chances and Warmer Temperatures Across the Pacific Northwest and Colorado | Arizona Weather: Cool Down, Showers, and Wind Gusts Expected | Reno and Tahoe Sizzle with Record-Breaking Heat in May 2026 | Chicago Area Weather: From Frost to 80s and Possible Storms | Chicago Area Weather Alert: Dust Storms and Evening Storms | Tornado Warnings in Pasco County and St. James Parish | Super El Niño Impacts and Hurricane Season 2026: What to Expect
Weather / Pacific Northwest
Pacific Northwest Weather Pattern Shift: Warmth Followed by Cooler Temperatures and Showers
The Pacific Northwest is set to experience a dynamic shift in weather patterns. Following a period of unseasonably warm temperatures, a significant cooling trend accompanied by showers is expected. This transition will bring the region back...
Key Insights
- **Brief Warm-Up:** High pressure is causing temperatures to rise, with western valleys peaking between 78 and 85 degrees on Tuesday, May 13, 2026.
- **Dramatic Cooling:** A major surge of cool marine air is expected, bringing gusty winds and dropping temperatures, starting in the afternoon of May 13.
- **Showers and Thunderstorms:** Showers are expected to return on Wednesday, with a chance of thundershowers, particularly in the east metro area. This will end a nearly 20-day dry streak.
- **Normal May Weather:** The cooler, wetter pattern is expected to last 5-7 days, bringing the region back to normal May weather conditions.
In-Depth Analysis
The shift from high pressure to a cooler, wetter system is driven by a change in the upper-level flow. The strong high pressure blocking weather systems will be replaced by a Pacific cold front. This front will bring cooler marine air inland, causing temperatures to drop significantly.
The expected rainfall will provide relief from the recent dry spell. The National Weather Service indicates that the Portland area could see about a half-inch of rain. The cooler temperatures will also reduce the risk of wildfires.
*Actionable Takeaway:* Residents should prepare for gusty winds, potential thunderstorms, and showers by securing outdoor items and carrying rain gear.
FAQ
- **Q: When will the showers start?
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- **Q: How long will the cooler weather last?
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Takeaways
- Expect a very warm Tuesday followed by a significant temperature drop and showers.
- Be prepared for gusty winds and potential thunderstorms.
- The cooler, wetter weather pattern will last for about a week, bringing the region back to normal May conditions.
Discussion
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Sources
Disclaimer
This article was compiled by Yanuki using publicly available data and trending information. The content may summarize or reference third-party sources that have not been independently verified. While we aim to provide timely and accurate insights, the information presented may be incomplete or outdated.
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