S
M
T
W
T
F
S
26
61°
43°
27
74°
39°
28
73°
51°
29
62°
49°
30
52°
40°
1
53°
36°
2
49°
35°
3
58°
46°
4
69°
56°
5
74°
59°
6
63°
50°
7
52°
35°
8
53°
40°
9
58°
47°
10
63°
45°
11
61°
46°
12
60°
46°
13
66°
48°
14
69°
50°
15
65°
49°
16
73°
54°
17
75°
55°
18
74°
54°
19
70°
54°
20
76°
53°
21
72°
52°
22
69°
46°
23
64°
46°
24
66°
48°
25
67°
49°
26
67°
49°
27
68°
48°
28
67°
48°
29
68°
49°
30
69°
49°
31
75°
58°
1
70°
55°
2
71°
51°
3
71°
56°
4
73°
58°
5
75°
58°
6
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bethesda
Bethesda's May 2026 forecast shows daily high temperatures ranging from 49° to 79°, with overnight lows between 35° and 60°. The average high for May is 67° with an average low of 50°. 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 Bethesda. See also: June | July | August.
