Portland, OR weather
Right now 57°, cloudy · tonight 54°, fog · seven days from the National Weather Service
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Right now · 57° · cloudy · calm · 1° cooler than this time yesterday · at Portland, 2:55 AM
Today, in the Weather Service’s words
Patchy fog after 1am. Partly cloudy. Low around 54, with temperatures rising to around 56 overnight. North northwest wind around 3 mph.
Seven days
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.
Sources: National Weather Service forecast and hourly grid for Portland (api.weather.gov), updated Tue, 3:41 AM UTC. Sunrise and sunset from NOAA’s solar position calculations. Snowfall normals from NOAA’s 1991-2020 US Climate Normals. County lines from the US Census Bureau.