Weather on May 15
Gresham, OR
55 Years of Data
Avg High
70°F
Avg Low
49°F
Warmest
2023
77°F avg
Coldest
1991
49°F avg
About This Date
May 15th in Gresham, OR typically brings pleasant spring weather, with average highs around 70°F and lows near 49°F. Over 52 years of records, the warmest May 15th was in 2023 (77°F average), while the coldest was 1991 (49°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 44% of May 15th dates historically, with the wettest May 15th recording 2.16" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Gresham, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 50° | 55° | 0.23" | — |
| 2024 | 84° | 50° | 67° | — | — |
| 2023warmest | 92° | 62° | 77° | — | — |
| 2022 | 70° | 58° | 64° | 0.36" | — |
| 2021 | 81° | 47° | 64° | — | — |
| 2020 | 69° | 52° | 60° | 0.25" | — |
| 2019 | 63° | 51° | 57° | 0.74" | — |
| 2018 | 71° | 56° | 63° | — | — |
| 2017 | 61° | 43° | 52° | 0.66" | — |
| 2016 | 58° | 54° | 56° | 1.65" | — |
| 2015 | 60° | 52° | 56° | — | — |
| 2014 | 83° | 56° | 69° | — | — |
| 2013 | 60° | 48° | 54° | 0.05" | — |
| 2012 | 79° | 50° | 64° | — | — |
| 2011 | 57° | 49° | 53° | 2.16" | — |
| 2010 | 74° | 46° | 60° | — | — |
| 2009 | 72° | 40° | 56° | — | — |
| 2008 | 88° | 52° | 70° | — | — |
| 2007 | 85° | 53° | 69° | — | — |
| 2006 | 87° | 52° | 69° | — | — |
| 2005 | 65° | 55° | 60° | 0.91" | — |
| 2004 | 57° | 50° | 54° | 0.28" | — |
| 2003 | 59° | 43° | 51° | 0.48" | — |
| 2002 | 67° | 38° | 52° | — | — |
| 2001 | 60° | 50° | 55° | 0.69" | — |
| 2000 | 71° | 54° | 62° | 0.51" | — |
| 1999 | 57° | 46° | 52° | 0.1" | — |
| 1998 | 57° | 46° | 52° | 0.58" | — |
| 1997 | 85° | 58° | 71° | 0.1" | — |
| 1996 | 66° | 52° | 59° | 1.3" | — |
| 1995 | 86° | 51° | 69° | — | — |
| 1994 | 70° | 52° | 61° | 0.15" | — |
| 1993 | 74° | 52° | 63° | — | — |
| 1992 | 80° | 46° | 63° | — | — |
| 1991coldest | 55° | 43° | 49° | — | — |
| 1990 | 63° | 42° | 52° | — | — |
| 1989 | 78° | 44° | 61° | — | — |
| 1988 | 73° | 48° | 61° | — | — |
| 1987 | 69° | 52° | 60° | — | — |
| 1986 | 65° | 40° | 52° | — | — |
| 1985 | 63° | 37° | 50° | — | — |
| 1984 | 60° | 46° | 53° | 0.2" | — |
| 1981 | 65° | 45° | 55° | 1.55" | — |
| 1980 | 63° | 47° | 55° | — | — |
| 1979 | 82° | 39° | 61° | — | — |
| 1977 | 61° | 46° | 53° | 0.64" | — |
| 1976 | 67° | 43° | 55° | — | — |
| 1975 | 71° | 52° | 61° | — | — |
| 1974 | 59° | 41° | 50° | 0.48" | — |
| 1973 | 86° | 54° | 70° | — | — |
| 1972 | 80° | 53° | 67° | — | — |
| 1971 | 64° | 46° | 55° | 0.18" | — |
52 years of data from PORTLAND TROUTDALE AP