Historical Weather in Portland, OR
See 55+ years of weather history for any date in Portland going back to 1970.
Part of Oregon weather history
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Today in Portland Weather HistorySee records, averages, and 55+ years of data for today's date
→Monthly Climate Averages
Historical temperature and precipitation averages for Portland, OR, based on 55+ years of weather data.
Warmest MonthAugustAvg High: 81°F / Low: 58°F
Coldest MonthDecemberAvg High: 46°F / Low: 36°F
Jan
47°/ 36°
💧 8.1"
❄️ 1.6"
Feb
50°/ 37°
💧 6.8"
❄️ 2.1"
Mar
56°/ 40°
💧 6.2"
❄️ 1.3"
Apr
61°/ 43°
💧 5.0"
❄️ 2.0"
May
68°/ 49°
💧 5.0"
Jun
74°/ 53°
💧 4.7"
Jul
81°/ 58°
💧 3.7"
Aug
81°/ 58°
💧 4.6"
Sep
75°/ 54°
💧 5.9"
Oct
63°/ 47°
💧 6.4"
Nov
53°/ 41°
💧 8.2"
❄️ 2.1"
Dec
46°/ 36°
💧 8.9"
❄️ 1.3"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Portland Temperature Records
- Record High: The hottest temperature ever recorded in Portland, OR is 116°F, set on June 28, 2021.
- Record Low: The coldest temperature ever recorded in Portland, OR is 5°F, set on December 22, 1998.
- Data Coverage: Based on 54 years of data from NOAA weather station: PORTLAND KGW-TV.
All-Time Record High
116°F
June 28, 2021
All-Time Record Low
5°F
December 22, 1998
Monthly Temperature Records in Portland
| Month | Record High | Record Low |
|---|---|---|
| January | 67°F(2005) | 8°F(2017) |
| February | 71°F(1988) | 8°F(1989) |
| March | 84°F(2025) | 19°F(1989) |
| April | 90°F(2016) | 26°F(2008) |
| May | 103°F(1983) | 33°F(2002) |
| June | 116°F(2021) | 39°F(1999) |
| July | 108°F(2009) | 45°F(1988) |
| August | 108°F(2023) | 44°F(1980) |
| September | 105°F(1988) | 36°F(1970) |
| October | 92°F(1987) | 24°F(2006) |
| November | 73°F(2010) | 13°F(1985) |
| December | 67°F(1993) | 5°F(1998) |
Portland Snow RecordsSee the top 10 snowiest days ever recorded
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