S
M
T
W
T
F
S
26
58°
46°
27
70°
45°
28
63°
50°
29
62°
54°
30
70°
49°
1
67°
44°
2
63°
49°
3
64°
44°
4
77°
51°
5
86°
61°
6
71°
59°
7
63°
51°
8
74°
48°
9
76°
59°
10
82°
55°
11
64°
49°
12
71°
46°
13
77°
57°
14
63°
52°
15
73°
52°
16
85°
54°
17
89°
64°
18
93°
67°
19
97°
72°
20
96°
71°
21
71°
58°
22
60°
52°
23
58°
52°
24
66°
55°
25
75°
62°
26
76°
68°
27
83°
65°
28
83°
57°
29
78°
61°
30
77°
53°
31
73°
55°
1
76°
56°
2
79°
59°
3
78°
60°
4
77°
60°
5
86°
63°
6
84°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Washington City
Washington City's May 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 53° and 68°. The average high for May is 79° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Washington City. See also: June | July | August.
