Washington DC Recent May Temperatures, Rainfall

The numbers here describe what the May weather in Washington DC was like for every year since 2010. A series of tables gives May data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many hot days occurred each May. Then there's information on how much rain actually landed this month during recent years, as well as how often Washington had wet weather.

The climate data come from weather measurements made at the Reagan National Airport near downtown Washington.

Temperature

May temperature averages by year in Washington
High °F	Low °F	Year	High °C	Low °C
75	55	2023	24	13
76	59	2022	25	15
76	56	2021	25	13
72	55	2020	22	13
79	63	2019	26	17
81	63	2018	27	17
74	57	2017	23	14
71	57	2016	22	14
83	64	2015	28	18
78	59	2014	26	15
76	58	2013	24	14
80	63	2012	27	17
77	59	2011	25	15
78	60	2010	26	16

Number of days in May when the temperature in Washington rose to at least 70 or 90 degrees Fahrenheit
Year	70 °F 21 °C	90 °F 32 °C
2023	26	0
2022	25	2
2021	23	4
2020	18	0
2019	27	5
2018	29	4
2017	19	2
2016	16	0
2015	29	7
2014	25	2
2013	19	3
2012	31	2
2011	26	3
2010	24	3

Rain

This table gives the total precipitation that fell on Washington during May in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for May in Washington
Days	Year	Inches	Millimetres
9	2023	1.3	34
14	2022	6.4	162
10	2021	3.8	96
12	2020	2.5	63
13	2019	5.0	126
12	2018	8.7	222
15	2017	5.6	141
19	2016	5.7	144
6	2015	1.9	49
11	2014	5.0	126
11	2013	2.8	72
13	2012	3.3	84
11	2011	1.7	43
9	2010	2.4	61

Washington DC - Recent May Temperatures and Rainfall

Temperature

Rain

Reference

More on Weather in Washington