Portland Downtown, OR
Oregon · Records since 1874–2026
Records for August 11
🔥 Record High
August 11, 1992
+21° from 81° normal❄ Record Low
August 11, 1899
-11° from 59° normalAll-Time Records — Portland Downtown
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 102°F | August 11, 1992 |
| 2 | 102°F | August 11, 1977 |
| 3 | 101°F | August 11, 1990 |
| 4 | 100°F | August 11, 2021 |
| 5 | 100°F | August 11, 1961 |
| 6 | 99°F | August 11, 1971 |
| 7 | 98°F | August 11, 1981 |
| 8 | 97°F | August 11, 2025 |
| 9 | 97°F | August 11, 2014 |
| 10 | 96°F | August 11, 1930 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 48°F | August 11, 1899 |
| 2 | 48°F | August 11, 1880 |
| 3 | 50°F | August 11, 1883 |
| 4 | 51°F | August 11, 1989 |
| 5 | 51°F | August 11, 1908 |
Heat Wave Summary — Portland Downtown
threshold: 89°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date119 of 215 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1875–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Portland Downtown
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 25, 2009 – Aug 3, 2009 | 10 | 105°F (Jul 28) | 96°F | 66°F |
| 2 | Aug 12, 1967 – Aug 20, 1967 | 9 | 98°F (Aug 15) | 94°F | 64°F |
| 3 | Jul 22, 2018 – Jul 30, 2018 | 9 | 97°F (Jul 29) | 92°F | 61°F |
| 4 | Jul 26, 1974 – Aug 3, 1974 | 9 | 96°F (Jul 31) | 92°F | 62°F |
| 5 | Aug 6, 1981 – Aug 12, 1981 | 7 | 106°F (Aug 10) | 101°F | 66°F |
| 6 | Aug 3, 1972 – Aug 9, 1972 | 7 | 102°F (Aug 7) | 94°F | 65°F |
| 7 | Jul 25, 2022 – Jul 31, 2022 | 7 | 101°F (Jul 26) | 97°F | 67°F |
| 8 | Jul 17, 1888 – Jul 23, 1888 | 7 | 97°F (Jul 17) | 94°F | 59°F |
| 9 | Jul 12, 1911 – Jul 18, 1911 | 7 | 97°F (Jul 13) | 94°F | 65°F |
| 10 | Jun 30, 2015 – Jul 6, 2015 | 7 | 95°F (Jul 2) | 94°F | 63°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
91st-warmest month on record
48th-warmest July of 150 on record
+0.5° vs. 69.1° average (1991–2020)Longest 90°F Streak in July
2 consecutive days with highs of at least 90°F (Jul 21–22, 2026, peaking at 98°F)
The longest July streak since 2024 (2 years). The July record is 7 days, set in 2022.
Average July Temperature by Year
1875–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2015 | 73.0°F |
| 2 | 2009 | 73.0°F |
| 3 | 1941 | 72.9°F |
| 4 | 1958 | 72.6°F |
| 5 | 1906 | 72.3°F |
| 6 | 2018 | 72.1°F |
| 7 | 2024 | 72.0°F |
| 8 | 1985 | 71.9°F |
| 9 | 2022 | 71.7°F |
| 10 | 2014 | 71.2°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | August 1967 | 75.0°F |
| 2 | August 2022 | 73.3°F |
| 3 | August 2023 | 73.2°F |
| 4 | July 2015 | 73.0°F |
| 5 | July 2009 | 73.0°F |
| 6 | July 1941 | 72.9°F |
| 7 | August 2017 | 72.7°F |
| 8 | July 1958 | 72.6°F |
| 9 | August 2025 | 72.5°F |
| 10 | July 1906 | 72.3°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Portland Downtown, OR | 69.6°F | 48th of 150 |
| Portland, OR | 70.7°F | 21st of 86 |
| Vancouver, WA | 69.8°F | 19th of 129 |
| Hillsboro, OR | 67.8°F | 33rd of 96 |
| McMinnville, OR | 67.4°F | 36th of 110 |