Portland wakes Wednesday under clear skies and temperatures in the upper 40s to low 50s, with one more sunny, warm afternoon ahead. The high should reach near 78 degrees before the weather makes its expected fall pivot late this week. By Friday and Saturday, rain chances return as highs slide into the 60s.
Early conditions at Portland International Airport were clear with light offshore flow; the flow was expected to build out of the north to northwest later, and no rain was in sight. The National Weather Service expects warm, dry conditions through Thursday. Hoodline’s forecast calls for highs near 78 Wednesday and near 80 Thursday.
One More Warm, Sunny Afternoon
Wednesday night should stay mostly clear, with temperatures dropping to around 54 degrees. High clouds will increase Thursday night.
The latest outlook adds detail to Tuesday’s Hoodline forecast, which flagged one last warm spell before the weekend shift. Friday now looks noticeably cooler, with a high near 68 and a 20% chance of rain showers after late morning.
Rain Chances Return Friday
Saturday brings another chance of rain showers, mainly before 5 p.m., with a high near 63 degrees. The odds remain modest in Portland, but the day will be cooler and more unsettled than the sunny stretch earlier in the week.
Sunday should turn sunny again, though cooler, with a high near 64. Monday is forecast to reach about 66 degrees under sunny skies. A modest warming trend is expected, with low chances of another trough by midweek.
Cool Nights Could Bring Frost Outside The City
Overnight lows will settle into the mid-40s to around 50 degrees through the weekend and early next week. Forecasters say morning frost will be possible in rural valleys away from Portland’s urban core, especially where skies clear and winds stay light.
For Portland residents, the practical takeaway is a warm, dry Wednesday and Thursday followed by a cooler weekend that may require a jacket and a rain backup. No land-based watches or warnings are listed for the Portland forecast point.
