Mist and Mild Showers: Navigating Portland’s Sunday Transition

A Misty Start for the Rose City

Portland residents waking up this Sunday morning, March 8, 2026, will find the city draped in a familiar Pacific Northwest veil. The day began with a mist-heavy atmosphere and a low cloud ceiling that settled over the Willamette Valley. Early morning temperatures hovered around a chilly 38°F, accompanied by a high humidity level of approximately 90%. While the air felt crisp, the wind remained calm, providing a quiet, albeit damp, start to the second Sunday of March.

Afternoon Outlook: Light Rain and Rising Mercury

As we progress into the afternoon, the heavy mist is expected to transition into intermittent light rain showers. Meteorological data indicates a 35% probability of precipitation during the peak daylight hours. Despite the dampness, temperatures will climb to a mild high of 52°F, which is slightly above the seasonal average for this time of year. This afternoon window will be the warmest part of the day, though the overcast skies are likely to persist, limiting sunshine to brief, filtered intervals.

• Morning: Misty and cloudy, starting at 38°F.
• Afternoon: 35% chance of light rain with a high of 52°F.
• Evening: Mostly cloudy and cooling to 38°F.
• Humidity: Remaining high near 87%.

Evening Conditions and Nighttime Chill

Heading into the evening hours, the chance of rain will taper off slightly to 25%. The city will remain under mostly cloudy skies, preventing any significant radiative cooling, yet the thermometer will still dip back down toward a low of 38°F by late tonight. While the city itself is not under any immediate wind or flood warnings, the saturated air and wet pavement may cause slick conditions on side streets and pedestrian walkways through the overnight period.

Regional Travel Advisory

For those planning to head east out of the city, please be aware of changing conditions in the higher elevations. While Portland sees only light rain today, a Winter Weather Advisory is in effect for the North Oregon Cascades and the Mount Hood area. Travelers can expect a rain and snow mix throughout Sunday at higher altitudes, with heavier snow accumulations predicted to begin early Monday morning. If your Sunday plans involve mountain passes, ensure your vehicle is equipped for winter conditions and stay tuned for further updates as a more active spring-like pattern begins to move into the region.