Portland, OR: May

31 May 2026: May 2026 averaged 61.6°F in Portland, OR, the warmest May since 2023, 8th warmest of 86.

May 2026

Mean temperature: 61.6°F; Warmest since 2023; 8th warmest of 86
Precipitation: 0.65 in; Driest since 2021; 8th driest of 86

A normal May in Portland, OR (1991 to 2020): a mean temperature of 59.8°F, between 55°F and 62.2°F in eight years of ten and 2.12 in of precipitation, between 0.59 in and 4.69 in in eight years of ten.

The mean temperature of every May in Portland, OR since 1941: 61.6°F in 2026; the highest is 64.3°F, in 2023.

Normal range, 55 to 62.2°F

Every year, ranked, as a table

Every May in Portland, OR from 1941 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank
2026	61.6	8	72.4	8	50.9	11	0.65	79
2025	60.1	18	70.5	22	49.8	19	1.92	46
2024	59.3	32	69.2	34	49.4	26	2.44	32
2023	64.3	1	75.5	2	53.1	1	0.91	74
2022	56.9	55	65.3	65	48.5	36	3.78	10
2021	60.1	18	70.5	22	49.6	22	0.58	81
2020	60.4	15	69.7	29	51	10	2.21	39
2019	62.2	4	72.7	6	51.6	7	1.51	59
2018	63	3	73.6	3	52.4	2	0.17	85
2017	59.8	25	70.2	26	49.3	27	1.92	46
2016	62.2	4	72.3	9	52.1	3	1.72	53
2015	61.1	11	70.7	20	51.5	8	0.59	80
2014	61.2	10	71.1	18	51.3	9	2.39	34
2013	59.7	27	69.5	32	49.9	18	4.75	3
2012	58	40	67.9	45	48	44	3.37	16
2011	54.1	81	62.5	82	45.6	76	2.92	22
2010	55	74	63.2	78	46.8	60	4.68	4
2009	60.1	18	71.5	11	48.7	35	3.26	19
2008	58.9	35	67.5	48	50.3	14	2.02	43
2007	58.6	38	69.5	32	47.6	50	1.45	61
2006	59.8	25	70.2	26	49.3	27	3.00	21
2005	60.1	18	68.5	37	51.8	4	4.34	7
2004	60.1	18	68.5	37	51.7	5	1.78	50
2003	57.3	50	66.5	56	48.1	42	1.49	60
2002	55.7	69	64.6	71	46.8	60	1.86	48
2001	59.4	29	71.5	11	47.3	54	0.91	74
2000	57.5	45	66	59	49.1	31	2.70	28
1999	54.9	75	63.9	75	45.9	72	1.97	44
1998	56.2	67	62.7	80	49.8	19	5.55	1
1997	62.2	4	72.6	7	51.7	5	3.63	12
1996	55.2	73	62.7	80	47.8	47	4.88	2
1995	60.7	13	71.6	10	49.8	19	1.65	54
1994	60.7	13	71.3	15	50	17	0.56	83
1993	61.1	11	71.3	15	50.9	11	4.36	6
1992	63.1	2	76.6	1	49.6	22	0.10	86
1991	54.7	76	62.3	84	47.1	55	3.34	18
1990	56.7	56	65.6	63	47.8	47	2.37	35
1989	58	40	67.6	46	48.3	40	2.87	24
1988	56.4	64	65.8	60	46.9	59	2.53	30
1987	60.4	15	71.1	18	49.6	22	1.63	55
1986	57.6	42	67.3	52	47.9	46	2.19	40
1985	58.2	39	68.2	43	48.3	40	1.52	58
1984	56.4	64	64.8	70	48	44	3.41	15
1983	60.4	15	70.4	25	50.4	13	1.30	67
1982	57.6	42	68.8	36	46.3	67	0.46	84
1981	57.5	45	66.2	57	48.8	33	2.25	37
1980	57.3	50	66.1	58	48.5	36	2.19	40
1979	60.1	18	70.5	22	49.6	22	2.41	33
1978	54.6	77	64.5	72	44.8	81	3.17	20
1977	53.8	84	62.3	84	45.3	79	4.30	8
1976	56.6	60	67.2	53	45.9	72	2.29	36
1975	57.5	45	68.4	40	46.5	64	1.35	64
1974	55.7	69	64.4	74	47	57	1.74	52
1973	59.4	29	71.2	17	47.6	50	1.43	62
1972	60.1	18	71.4	14	48.9	32	2.23	38
1971	56.7	56	67.6	46	45.9	72	1.00	73
1970	57	52	68.9	35	45.1	80	1.55	57
1969	59.4	29	71.5	11	47.4	52	1.61	56
1968	56.3	66	65.6	63	47	57	3.63	12
1967	57	52	68.1	44	46	69	1.02	72
1966	57	52	69.6	31	44.3	82	0.91	74
1965	54.3	80	64.5	72	44	83	1.31	66
1964	52.6	86	63.3	76	41.9	86	1.04	71
1963	56.5	61	67.4	50	45.7	75	2.74	27
1962	53.9	82	61.1	86	46.6	62	2.56	29
1961	56.5	61	65.7	62	47.4	52	2.80	26
1960	53.9	82	62.4	83	45.5	77	3.37	16
1959	55.7	69	65.2	66	46.2	68	2.89	23
1958	61.8	7	73.4	4	50.2	15	1.35	64
1957	58.8	36	67.5	48	50.2	15	1.97	44
1956	59	34	69.7	29	48.4	39	2.50	31
1955	52.9	85	63	79	42.8	85	1.24	68
1954	56.7	56	67.4	50	46	69	1.83	49
1953	54.4	79	63.3	76	45.5	77	3.45	14
1952	57.5	45	68.5	37	46.5	64	0.78	77
1951	56.7	56	67	55	46.5	64	1.75	51
1950	54.5	78	65.8	60	43.2	84	0.57	82
1949	59.1	33	69.8	28	48.5	36	2.12	42
1948	56	68	65	69	47.1	55	3.76	11
1947	61.3	9	73.3	5	49.3	27	0.66	78
1946	59.7	27	70.6	21	48.8	33	1.24	68
1945	58.8	36	68.4	40	49.2	30	4.57	5
1944	57.5	45	68.4	40	46.6	62	1.07	70
1943	55.6	72	65.2	66	46	69	1.42	63
1942	56.5	61	65.1	68	47.8	47	2.84	25
1941	57.6	42	67.1	54	48.1	42	4.27	9

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2023	64.3
1992	63.1
2018	63
2019	62.2
2016	62.2
1997	62.2
1958	61.8
2026	61.6
1947	61.3
2014	61.2

Coldest
Year	Mean, °F
1964	52.6
1955	52.9
1977	53.8
1962	53.9
1960	53.9
2011	54.1
1965	54.3
1953	54.4
1950	54.5
1978	54.6

Wettest
Year	Precipitation, in
1998	5.55
1996	4.88
2013	4.75
2010	4.68
1945	4.57
1993	4.36
2005	4.34
1977	4.30
1941	4.27
2022	3.78

Driest
Year	Precipitation, in
1992	0.10
2018	0.17
1982	0.46
1994	0.56
1950	0.57
2021	0.58
2015	0.59
2026	0.65
1947	0.66
1952	0.78

The hottest, coldest and wettest days

Hottest day: 91°F; 3 May 2026
Coldest night: 41°F; 17 May 2026
Wettest day: 0.17 in; 14 May 2026

Every month, season and year

Months

Seasons

Years

Portland, OR the day's answers

All-time records

Every answer in words

May 2026 brought 0.65 in of precipitation in Portland, OR, the driest May since 2021, 8th driest of 86.
The hottest day of May 2026 in Portland, OR: 91°F on Sunday 3 May 2026.
The coldest night of May 2026 in Portland, OR: a low of 41°F on Sunday 17 May 2026.
The wettest day of May 2026 in Portland, OR: 0.17 in on Thursday 14 May 2026.