S
M
T
W
T
F
S
26
69°
51°
27
72°
55°
28
69°
50°
29
65°
51°
30
68°
51°
1
67°
50°
2
68°
47°
3
70°
51°
4
69°
57°
5
72°
57°
6
69°
55°
7
69°
52°
8
74°
56°
9
70°
56°
10
77°
60°
11
79°
59°
12
78°
58°
13
72°
60°
14
81°
60°
15
75°
57°
16
75°
57°
17
74°
61°
18
80°
62°
19
81°
58°
20
80°
53°
21
72°
54°
22
72°
58°
23
73°
55°
24
76°
61°
25
82°
63°
26
84°
64°
27
81°
64°
28
75°
63°
29
76°
65°
30
76°
64°
31
80°
65°
1
85°
65°
2
84°
63°
3
84°
65°
4
85°
66°
5
80°
64°
6
86°
63°
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 65° to 86°, with overnight lows between 47° and 66°. The average high for May is 76° with an average low of 58°. 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.
