Will it be a white Christmas in Portland?

Snow depth is measured once a day in whole inches; a trace is less than half an inch. "No reading" means the station sent none for that day.

Forecasts reach about 7 days ahead, so nobody can say yet whether Portland will see snow on Christmas 2026. From December 18, 2026 this page shows the National Weather Service forecast for Christmas Eve night and Christmas Day.

NOAA's 1991–2020 normals give Portland a 3.5% chance of at least 1 inch of snow on the ground around December 25 — the figure behind NOAA's white Christmas map. It is the share of days with 1 inch or more on the ground in a 29-day window centred on December 25, so it describes late December, not the day alone.

At Portland International Airport, at least 1 inch of snow was on the ground on December 25 in 2 of the 35 years from 1991 to 2025 with a snow-depth reading. The most recent was 2017; the deepest was 10 inches in 2008.

At this one station, snow was seen falling on 3 of the 35 Christmas Days with a snowfall reading from 1991 to 2025 — the Met Office's test. The UK rule counts a single snowflake anywhere in the country, not at one station.