Portland, OR Weather
Today's Forecast
Mostly cloudy. Low around 61, with temperatures rising to around 63 overnight. South southwest wind around 7 mph.
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Data from the National Weather Service
Last updated Sun, Aug 23, 4:41 AM UTC
Winter in Portland
Portland averages 4 inches of snow a year, according to NOAA’s 1991–2020 climate normals — a rare snow place. Snow is unusual here. An inch is enough to close schools because almost nothing is set up to clear it.
That is why local snowfall thresholds differ so much from one town to the next: a district that plans for 4 inches a year is equipped differently from one that never sees any. Here, roughly 1 inches in a single storm is where a normal school day comes under threat.
Upper air over Portland
The nearest radiosonde launch is Salem, about 45 miles away. A weather balloon goes up twice a day and measures temperature, humidity and wind all the way through the atmosphere — which is what forecasters actually read to judge whether storms will fire, and how a surface forecast was arrived at.