Seattle, WA – The Pacific Northwest is projecting colder-than-normal temperatures for the holiday week across Washington, Oregon and Idaho as winter-like air settles into the region earlier than usual.
According to the NOAA Climate Prediction Center, the 8–14 day outlook for November 22–28, 2025 places much of the Pacific Northwest solidly in the below-normal temperature zone. That means Seattle, Portland, Spokane, Boise, Salem, and the Cascades should expect a colder Thanksgiving with daytime highs running several degrees under late-November averages.
This early-season cold is part of a broader national split pattern tied to La Niña, which is driving cold air into the West while warmer air dominates the East.
NOAA notes that higher elevations—including the Cascades, the Blue Mountains, and Idaho’s central highlands—may experience additional early-season snow potential and widespread overnight freezing.
The cold pattern not only remains but intensifies heading into next month. The week 3–4 outlook (November 29–December 12) shows near- to below-normal temperatures continuing across Washington, Oregon and Idaho, with the strongest cold signal extending into interior Washington, eastern Oregon, and southern Idaho.
Early December Temperature Highlights
- Washington (Seattle, Spokane): Continued colder-than-normal pattern with increasing frost risk; mountain snow likely.
- Oregon (Portland, Salem): Below-normal temps favored; interior valleys trend cold with early December morning freezes.
- Idaho (Boise, Idaho Falls): Strong cold signal with winter-like temperatures; early-season snow chances continue.
- Montana Influence (Missoula, Great Falls): Reinforcing Arctic air supports widespread regional chill.
Thanksgiving travel across I-5, I-84, and mountain passes may require extra caution due to colder air and potential mixed precipitation at higher elevations.
