Portland is starting Saturday under a blanket of clouds and temperatures in the low 60s, but the gray cover should not last all day. A slight chance of showers or a stray thunderstorm lingers before early afternoon, followed by partly sunny skies and a high near 81 degrees.
The rain-and-thunderstorm chance is around 20% early Saturday and drops sharply after about 2 p.m. According to the National Weather Service in Portland, any storms are expected to be isolated, while the Cascades have a better chance of seeing lightning, brief heavy rain or sudden wind shifts into the evening.
Warm Afternoons Take Over
Saturday night will be mostly cloudy with a low near 59 degrees, then Sunday warms to about 84 under partly sunny skies. Monday looks like the warmest day of the immediate stretch, with mostly sunny skies and a high near 85.
The comfortable summer pattern continues Tuesday through Friday, with highs ranging from about 81 to 84 degrees and generally light north or northwest winds. Overnight lows will stay in the upper 50s to around 60, making for mild evenings even as afternoons remain warm.
Cloudy Mornings, Better Outdoor Weather Later
For Portland plans, the best bet is to keep a light layer handy Saturday morning and watch the sky before heading out, then expect a more dependable afternoon. No watches, warnings or advisories are posted for Oregon in the current forecast, and the broader week looks mostly dry across the city.
