Home › Oregon › Portland (Oregon)

When does it first snow in Portland (Oregon), OR?

At Portland (Oregon), the typical date of the first measurable snowfall (0.1 inch or more in a day) is Dec 28. That is the median over the last 30 snow seasons: half of seasons saw it earlier, half later. In about 1 season in 10 it came by Dec 5, and in 1 in 10 not until Feb 9 or later. The earliest was Nov 19 (2003-04) and the latest Mar 14 (2019-20). A first snowfall of at least 1 inch in a single day typically arrives around Jan 11, and 70% of seasons had one. The first freeze of fall (a low of 32°F or colder) typically comes around Nov 13, and the last freeze of spring around Mar 18.

This season so far (2026-27, data through Oct 15, 2026): no measurable snow recorded yet; no 32°F freeze recorded yet at this station. Compare with the typical dates above. This is observed data and can lag by a day or two, and it is not a forecast.

Dec 28Median first measurable snow (0.1"+)

Jan 11Median first 1"+ snowfall

4.6"Average snowfall per season

7%Chance of white Christmas (1"+ on ground Dec 25)

Nov 13Median first fall freeze (≤32°F)

Mar 18Median last spring freeze (≤32°F)

244Median freeze-free days between

First snowfall dates at Portland (Oregon)

First day with…	Median date	Typical range (10th–90th pct)	Earliest in 30 seasons	Latest in 30 seasons	Seasons with one
0.1" of snow or more (measurable)	Dec 28	Dec 5 – Feb 9	Nov 19 (2003-04)	Mar 14 (2019-20)	80%
1" of snow or more	Jan 11	Dec 19 – Feb 13	Dec 14 (2008-09)	Feb 24 (2010-11)	70%
3" of snow or more	Jan 27	Jan 6 – Feb 20	Dec 20 (2008-09)	Feb 22 (2022-23)	37%

Based on 30 seasons (July–June, 1995-96 to 2024-25) with at least 85% complete daily snowfall records at the station. Dates are for a single day’s snowfall, so "1 inch" means one calendar day with 1" or more, not total accumulation.

Chance the first snow has already happened by a given date

Snowfall	By Nov 1	By Dec 1	By Jan 1
0.1"+ (measurable)	0%	7%	43%
1"+	0%	0%	27%

In spring, the last measurable snowfall of the season typically falls around Feb 11 (median).

White Christmas odds in Portland (Oregon)

NOAA defines a white Christmas as at least 1 inch of snow on the ground on the morning of December 25. Using the last 30 years of daily snow-depth records (1995–2024) at this station, Portland (Oregon) had that in 7% of years, at least 3 inches in 3%, and at least 6 inches in 3%. The average depth on Dec 25 was 0.4 inches and the deepest was 10 inches. New snow was falling (0.1" or more) on Christmas Day itself in 3% of years. Based on 30 years with a recorded depth on Dec 25.

Chance of at least 1 inch of snow on the ground, by date

Share of the last 30 years with 1"+ snow depth within 3 days of each date. Snow cover is most likely around Jan 14 (11%). Red line: Dec 25.

First and last freeze dates in Portland (Oregon)

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Nov 13	Oct 30 – Dec 11	Oct 26 (2020) / Dec 29 (2012)	100%
32°F or colder (freeze)	Last in spring	Mar 18	Mar 1 – Apr 5	–	100%
28°F or colder (hard freeze)	First in fall	Nov 29	Nov 6 – Dec 23	Oct 31 (1995) / Dec 29 (2020)	83%
28°F or colder (hard freeze)	Last in spring	Feb 16	Jan 16 – Mar 4	–	93%

Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.

The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 244 days.

Nearby weather stations

Source station: Portland Intl Ap (USW00024229), elevation 22 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.

Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Oregon (on our sister site PlugVsPump, from EIA prices).