El Nino Slows Start of November Rains in Portland Area
El Nino Slows Start of November Rains in Portland Area
US · Published Nov 5, 2026
• The ongoing El Nino pattern is causing a weaker-than-normal jet stream over the Pacific, leading to a slow start to the November rainy season in Portland, Oregon.
• October ended with temperatures 1.9°C above average and rainfall 1.38 inches below normal at Portland International Airport.

Impact & Risks

The delayed onset of the rainy season could impact water resources and agriculture in the Portland area. The lack of significant rainfall may also affect local ecosystems that rely on seasonal precipitation. Additionally, the ongoing El Nino, marked by record-high sea surface temperatures in the equatorial Pacific, could lead to further disruptions in typical weather patterns, potentially influencing winter conditions across the Pacific Northwest.

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