Pacific Northwest, Northern California Expect Warm Days Before Weekend Showers

The Pacific Northwest and parts of California are experiencing a shift in weather patterns as September progresses. Portland will have a warm and mostly sunny Thursday with highs in the upper 80s to low 90s, but temperatures are expected to drop into the 70s by the weekend with increased chances of rain and thunderstorms, especially in the mountains and Cascades. Seattle will enjoy sunny skies and mild temperatures in the lower 80s through Friday, but the weekend may bring a 20-30% chance of showers with cooler highs in the mid-70s. Sacramento is forecasted to see consistent sunny and warm weather, with highs near the mid-90s early in the week before settling into the mid-80s with clear skies continuing into the weekend. Overall, the region is transitioning from a warm and dry pattern to cooler and wetter conditions by the weekend and early next week, with the National Weather Service highlighting the potential for thunderstorms and fire risks in some mountainous areas.