Weather on May 1
Portland, OR
55 Years of Data
Avg High
66°F
Avg Low
46°F
Warmest
2014
74°F avg
Coldest
1988
45°F avg
About This Date
May 1st in Portland, OR typically brings mild spring weather, with average highs around 66°F and lows near 46°F. Over 55 years of records, the warmest May 1st was in 2014 (74°F average), while the coldest was 1988 (45°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 31% of May 1st dates historically, with the wettest May 1st recording 2.01" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for May 1st in Portland, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 47° | 65° | — | — |
| 2024 | 57° | 42° | 50° | 0.05" | — |
| 2023 | 58° | 50° | 54° | — | — |
| 2022 | 65° | 48° | 56° | — | — |
| 2021 | 60° | 49° | 54° | — | — |
| 2020 | 61° | 43° | 52° | 0.15" | — |
| 2019 | 68° | 43° | 55° | — | — |
| 2018 | 58° | 48° | 53° | — | — |
| 2017 | 54° | 41° | 47° | 0.03" | — |
| 2016 | 81° | 50° | 65° | — | — |
| 2015 | 71° | 51° | 61° | — | — |
| 2014warmest | 90° | 58° | 74° | — | — |
| 2013 | 69° | 39° | 54° | — | — |
| 2012 | 52° | 42° | 47° | 0.46" | — |
| 2011 | 67° | 38° | 52° | — | — |
| 2010 | 62° | 46° | 54° | — | — |
| 2009 | 71° | 43° | 57° | — | — |
| 2008 | 60° | 39° | 50° | — | — |
| 2007 | 61° | 46° | 53° | 0.2" | — |
| 2006 | 61° | 36° | 48° | — | — |
| 2005 | 71° | 49° | 60° | — | — |
| 2004 | 81° | 52° | 66° | — | — |
| 2003 | 70° | 44° | 57° | — | — |
| 2002 | 63° | 48° | 55° | — | — |
| 2001 | 56° | 43° | 49° | 0.13" | — |
| 2000 | 67° | 52° | 59° | 0.66" | — |
| 1999 | 55° | 46° | 51° | 0.25" | — |
| 1998 | 85° | 55° | 70° | 0.66" | — |
| 1997 | 56° | 42° | 49° | — | — |
| 1996 | 61° | 47° | 54° | — | — |
| 1995 | 59° | 53° | 56° | 1.57" | — |
| 1994 | 62° | 42° | 52° | — | — |
| 1993 | 55° | 45° | 50° | 0.25" | — |
| 1992 | 67° | 40° | 53° | — | — |
| 1991 | 75° | 46° | 61° | — | — |
| 1990 | 70° | 47° | 58° | — | — |
| 1989 | 66° | 52° | 59° | — | — |
| 1988coldest | 51° | 39° | 45° | 0.08" | — |
| 1987 | 54° | 45° | 49° | 0.79" | — |
| 1986 | 57° | 49° | 53° | 0.41" | — |
| 1985 | 76° | 52° | 64° | — | — |
| 1984 | 58° | 46° | 52° | 2.01" | — |
| 1983 | 59° | 50° | 55° | — | — |
| 1982 | 68° | 46° | 57° | — | — |
| 1981 | 64° | 47° | 55° | — | — |
| 1980 | 79° | 49° | 64° | — | — |
| 1979 | 58° | 48° | 53° | — | — |
| 1978 | 66° | 47° | 56° | — | — |
| 1977 | 64° | 51° | 58° | — | — |
| 1976 | 79° | 53° | 66° | 0.61" | — |
| 1975 | 73° | 44° | 59° | — | — |
| 1974 | 54° | 46° | 50° | 0.03" | — |
| 1973 | 78° | 46° | 62° | — | — |
| 1972 | 71° | 41° | 56° | — | — |
| 1971 | 78° | 53° | 66° | — | — |
55 years of data from PORTLAND KGW-TV