Portland, Oregon, United States climate

Average temperatures, precipitation and all-time records for Portland, Oregon, United States, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is August, averaging a high of 84°F, and its coldest is December, with an average low of 36°F.

Portland is the most populous city in the U.S. state of Oregon. Located in the Pacific Northwest at the confluence of the Willamette and Columbia rivers, it is the 28th-most populous city in the United States, sixth-most populous on the West Coast, and fourth-most populous in the Pacific Northwest,… via Wikipedia

How today compares

Latest recorded day: 2026-07-24. Each reading placed on Portland, Oregon, United States's own ±7-day seasonal distribution.

High 84°F Normal · 50th pct

Low 61°F High · 84th pct

Feels-like 90°F Normal · 58th pct

Humidity 15.5 g/m³ Near Record · 99th pct

Wind 7 mph Normal · 40th pct

Gust 13 mph Very Low · 3rd pct

Precip 0.00 in Dry

Open Portland in the live weather grader →

Notable weather in Portland

In the June 2021 heat dome, Portland reached an all-time record 116°F across three consecutive record-shattering days. Read more →

Portland average temperatures by month

Typical daily high and low, and average precipitation, for each month in Portland, Oregon, United States, based on 1980–2026 records. The wettest month is January (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	47°F	36°F	0.20 in
February	51°F	37°F	0.20 in
March	57°F	40°F	0.20 in
April	62°F	42°F	0.20 in
May	68°F	47°F	0.10 in
June	73°F	51°F	0.10 in
July	83°F	56°F	0.00 in
August	84°F	57°F	0.00 in
September	77°F	53°F	0.10 in
October	65°F	46°F	0.10 in
November	52°F	41°F	0.20 in
December	46°F	36°F	0.20 in

Jan 28°–53°

Feb 29°–58°

Mar 32°–66°

Apr 35°–74°

May 41°–82°

Jun 46°–84°

Jul 51°–93°

Aug 52°–95°

Sep 46°–89°

Oct 38°–75°

Nov 32°–58°

Dec 27°–53°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

Thinking of visiting Portland?

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Record extremes

Hottest day on record: 117°F on 2021-06-29
Coldest day on record: -1°F on 1989-02-05

All Portland weather records →

Percentiles compare each day to Portland, Oregon, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →