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Portland, OR Weather on July 11
Portland's July 11 record heat peaked at 99°F in 2007
July 11 in Portland typically brings mild summer conditions with an average high of 79°F, but the historical record reveals more dramatic swings. The city hit a scorching 99°F on this date in 2007, far exceeding the normal range, while a cool 50°F reading in 1973 shows the variability possible even in peak summer. Across 55 years of data, the 49-degree gap between record extremes underscores Portland's temperate maritime climate and the occasional heat waves that can interrupt its otherwise moderate summers.
What to Expect on July 11
Planning for July 11th in Portland, OR? Great weather for outdoor activities.
Frequently Asked Questions
What was the warmest July 11 ever in Portland?
The warmest July 11 in Portland, OR reached 99°F in 2007. That is 20°F above the long-term average high of 79°F.
What was the coldest July 11 ever in Portland?
The coldest July 11 in Portland, OR dropped to 50°F in 1973. That is 7°F below the long-term average low of 57°F.
What is the average temperature on July 11 in Portland?
On July 11, Portland averages a high of 79°F and a low of 57°F based on 55 years of NOAA weather observations from PORTLAND KGW-TV.
How many years of weather data are available for July 11 in Portland?
We have 55 years of weather records for July 11 in Portland, OR, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
July 11 Weather History in Portland
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 60°F | 0" | -- |
| 2024 | 83°F | 59°F | 0" | -- |
| 2023 | 79°F | 60°F | 0" | -- |
| 2022 | 92°F | 62°F | 0" | -- |
| 2021 | 83°F | 56°F | 0" | -- |
| 2020 | 78°F | 56°F | 0" | -- |
| 2019 | 77°F | 61°F | 0" | -- |
| 2018 | 85°F | 59°F | 0" | -- |
| 2017 | 77°F | 52°F | 0" | -- |
| 2016 | 72°F | 56°F | 0.41" | -- |
| 2015 | 71°F | 63°F | 0" | -- |
| 2014 | 87°F | 55°F | 0" | -- |
| 2013 | 75°F | 51°F | 0" | -- |
| 2012 | 85°F | 54°F | 0" | -- |
| 2011 | 73°F | 55°F | 0" | -- |
| 2010 | 81°F | 62°F | 0" | -- |
| 2009 | 76°F | 58°F | 0" | -- |
| 2008 | 87°F | 52°F | 0" | -- |
| 2007 | 99°F | 69°F | 0" | -- |
| 2006 | 77°F | 54°F | 0" | -- |
| 2005 | 75°F | 60°F | -- | -- |
| 2004 | 78°F | 54°F | 0" | -- |
| 2003 | 87°F | 59°F | 0" | -- |
| 2002 | 88°F | 62°F | 0" | -- |
| 2001 | 83°F | 55°F | 0" | -- |
| 2000 | 73°F | 55°F | 0" | -- |
| 1999 | 86°F | 58°F | 0" | -- |
| 1998 | 74°F | 57°F | 0" | -- |
| 1997 | 72°F | 57°F | 0" | -- |
| 1996 | 89°F | 52°F | 0" | -- |
| 1995 | 76°F | 55°F | 0" | -- |
| 1994 | 85°F | 53°F | 0" | -- |
| 1993 | 67°F | 56°F | 0" | -- |
| 1992 | 76°F | 60°F | 0" | -- |
| 1991 | 87°F | 56°F | 0" | -- |
| 1990 | 91°F | 58°F | 0" | -- |
| 1989 | 81°F | 53°F | 0" | -- |
| 1988 | 67°F | 56°F | 0.23" | -- |
| 1987 | 89°F | 62°F | 0" | -- |
| 1986 | 74°F | 60°F | 0" | -- |
| 1985 | 85°F | 61°F | 0" | -- |
| 1984 | 65°F | 53°F | 0" | -- |
| 1983 | 85°F | 59°F | 0" | -- |
| 1982 | 83°F | 58°F | 0" | -- |
| 1981 | 73°F | 54°F | 0" | -- |
| 1980 | 72°F | 55°F | 0" | -- |
| 1979 | 72°F | 57°F | 0.03" | -- |
| 1978 | 74°F | 57°F | 0" | -- |
| 1977 | 79°F | 55°F | 0" | -- |
| 1976 | 70°F | 54°F | 0" | -- |
| 1975 | 83°F | 56°F | 0" | -- |
| 1974 | 70°F | 53°F | 0.1" | -- |
| 1973 | 78°F | 50°F | 0" | -- |
| 1972 | 74°F | 58°F | 0" | -- |
| 1971 | 72°F | 56°F | 0" | -- |
Based on 55 years of data from NOAA station: PORTLAND KGW-TV
How Has July 11 Changed?
Temperatures on this date have remained relatively stable over the past several decades.
Monthly Climate Averages
Historical temperature and precipitation averages for Portland, OR, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.