Portland weather records
Record high and low temperatures for Portland, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 117°F on 2021-06-29; its coldest fell to -1°F on 1989-02-05.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 62°F2024-01-28
22°F2004-01-06
|
55°F2003-01-26
7°F2017-01-13
|
| February | 68°F1991-02-26
11°F1989-02-03
|
53°F2016-02-15
-1°F1989-02-05
|
| March | 78°F2025-03-26
40°F1989-03-02
|
55°F2025-03-24
24°F1989-03-03
|
| April | 88°F2023-04-28
43°F2022-04-11
|
57°F1992-04-29
27°F2009-04-04
|
| May | 100°F1983-05-28
50°F2013-05-22
|
64°F1983-05-29
34°F1985-05-11
|
| June | 117°F2021-06-29
55°F2026-06-08
|
79°F2021-06-28
39°F1991-06-04
|
| July | 108°F2009-07-30
62°F2026-07-01
|
77°F2006-07-22
42°F1981-07-08
|
| August | 106°F2023-08-15
64°F1999-08-30
|
72°F2023-08-16
43°F1980-08-29
|
| September | 106°F1988-09-02
56°F2019-09-29
|
70°F2022-09-10
36°F1984-09-24
|
| October | 89°F1988-10-01
47°F1984-10-31
|
63°F2003-10-21
26°F2019-10-31
|
| November | 70°F2010-11-03
28°F1985-11-24
|
59°F2021-11-12
14°F1985-11-24
|
| December | 63°F1993-12-10
17°F1983-12-24
|
57°F2023-12-05
3°F1990-12-21
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 68°F1991-02-26
11°F1989-02-03
|
57°F2023-12-05
-1°F1989-02-05
|
| Spring (Mar–May) | 100°F1983-05-28
40°F1989-03-02
|
64°F1983-05-29
24°F1989-03-03
|
| Summer (Jun–Aug) | 117°F2021-06-29
55°F2026-06-08
|
79°F2021-06-28
39°F1991-06-04
|
| Autumn (Sep–Nov) | 106°F1988-09-02
28°F1985-11-24
|
70°F2022-09-10
14°F1985-11-24
|
All-time records
The most extreme value Portland has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.