Washington County, OR
: September 2026 so far averaged 58.9°F in Washington County, OR, the coldest 1 to 29 September in the county average since 2005, tied 16th coldest of 76 (with 2004 and 1984) (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- Tuesday 29 September 2026: a high of 67.2°F averaged over Washington County, OR, the coldest 29 September day in the county average since 2023, 28th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 44.5°F averaged over Washington County, OR, the coldest 29 September night in the county average since 2024, 22nd coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- No measurable precipitation in the county average of Washington County, OR for 3 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
The month
- August 2026 averaged 66.9°F in Washington County, OR, the warmest August in the county average since 2025, tied 21st warmest of 132 (with 1992 and 1971) (county average from NOAA's monthly county data, 1895 to 2026).
- Days of the month without a value
- 0
Every year on this date
- Above the normal range
- In it
- Below it
- Normal range
- This year and the extreme
Every year as a table
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 67.2 | 44.5 |
| 2025 | 70.1 | 50 |
| 2024 | 68.3 | 42.4 |
| 2023 | 59.7 | 49 |
| 2022 | 66.3 | 51.5 |
| 2021 | 59.8 | 45.8 |
| 2020 | 82.4 | 52.1 |
| 2019 | 54.1 | 39.9 |
| 2018 | 80.2 | 50.8 |
| 2017 | 80.7 | 53.2 |
| 2016 | 70.5 | 45.8 |
| 2015 | 74.9 | 44.9 |
| 2014 | 70.9 | 49.8 |
| 2013 | 58.7 | 48.2 |
| 2012 | 77.2 | 52.5 |
| 2011 | 72.8 | 44 |
| 2010 | 75.3 | 54.6 |
| 2009 | 62.3 | 43.7 |
| 2008 | 82 | 49.4 |
| 2007 | 55.3 | 40.6 |
| 2006 | 80.8 | 52.3 |
| 2005 | 72.7 | 48.5 |
| 2004 | 75.5 | 51.9 |
| 2003 | 77.6 | 54.9 |
| 2002 | 71.4 | 48.4 |
| 2001 | 69.5 | 44.1 |
| 2000 | 67.1 | 48.2 |
| 1999 | 74 | 41.8 |
| 1998 | 73 | 48.4 |
| 1997 | 70.6 | 51.6 |
| 1996 | 77.8 | 50.9 |
| 1995 | 61.7 | 52.4 |
| 1994 | 70.1 | 55.6 |
| 1993 | 82.4 | 50.7 |
| 1992 | 78.3 | 45.3 |
| 1991 | 66.7 | 48.4 |
| 1990 | 78.2 | 51.7 |
| 1989 | 81.5 | 54.4 |
| 1988 | 75.5 | 45.6 |
| 1987 | 80 | 46.4 |
| 1986 | 56.9 | 47.7 |
| 1985 | 67.6 | 40.6 |
| 1984 | 70.9 | 42.4 |
| 1983 | 62.8 | 36.2 |
| 1982 | 58.2 | 38.6 |
| 1981 | 60.9 | 46.6 |
| 1980 | 68 | 47.5 |
| 1979 | 68.4 | 43.2 |
| 1978 | 68.9 | 48.8 |
| 1977 | 62.3 | 46.9 |
| 1976 | 73 | 53.1 |
| 1975 | 69 | 46.9 |
| 1974 | 70.8 | 40.9 |
| 1973 | 78.7 | 50.4 |
| 1972 | 56.1 | 39.4 |
| 1971 | 52.1 | 43.3 |
| 1970 | 78.7 | 46.1 |
| 1969 | 68.6 | 53.6 |
| 1968 | 76.7 | 46.7 |
| 1967 | 78.5 | 48.3 |
| 1966 | 76.9 | 52 |
| 1965 | 64.5 | 43.5 |
| 1964 | 64.7 | 44.8 |
| 1963 | 73.5 | 49.5 |
| 1962 | 60.9 | 48.5 |
| 1961 | 60.3 | 34.9 |
| 1960 | 79 | 45.4 |
| 1959 | 61.4 | 40.8 |
| 1958 | 74.9 | 49.8 |
| 1957 | 74.9 | 51.3 |
| 1956 | 60.9 | 46.1 |
| 1955 | 60.2 | 42.2 |
| 1954 | 64.8 | 36.9 |
| 1953 | 59.5 | 42.1 |
| 1952 | 74.2 | 46.6 |
| 1951 | 57.1 | 52.2 |
Nearby
Hillsboro, OR 6.9 mi, the nearest city with its own station