Portland Weather Forecast: Cooler Sunday, Hot Monday-Tuesday, Cloudy Week Ahead
Portland, OR will experience cooler weather on Sunday, followed by a brief period of hot temperatures on Monday and Tuesday. The latter half of the week is expected to be cloudier and cooler with a slight chance of showers.
Portland, OR, August 22, 2026 —
PORTLAND, OR – Residents of Portland can expect a varied weather pattern this week, beginning with cooler temperatures on Sunday. The city is forecast to experience a dip in mercury before a significant warmup begins.
Following Sunday’s cooler conditions, Portland is bracing for a short but intense heatwave on Monday and Tuesday. Temperatures are expected to climb considerably during these two days, marking a sharp contrast to the preceding cooler weather.
As the week progresses into its latter half, the forecast shifts again. Cloud cover is predicted to increase, leading to cooler temperatures than observed at the start of the week. Additionally, there is a slight chance of showers developing later in the week, indicating a return to more unsettled weather patterns.
The exact temperature ranges for the cooler Sunday, the hot Monday and Tuesday, and the subsequent cloudier and cooler days were not provided in the trend summary. Similarly, the specific timing and intensity of the potential showers remain undetermined.
Story summarized from the original created by Mark Nelsen on www.kptv.com, see more information here.
