S
M
T
W
T
F
S
26
70°
57°
27
75°
54°
28
72°
45°
29
82°
59°
30
75°
59°
1
66°
55°
2
59°
48°
3
72°
39°
4
82°
45°
5
82°
48°
6
82°
63°
7
79°
55°
8
73°
50°
9
75°
54°
10
86°
61°
11
77°
54°
12
73°
48°
13
81°
45°
14
79°
54°
15
79°
41°
16
88°
46°
17
93°
61°
18
93°
64°
19
93°
63°
20
93°
63°
21
95°
63°
22
86°
68°
23
75°
66°
24
84°
63°
25
79°
72°
26
90°
72°
27
86°
70°
28
90°
67°
29
86°
68°
30
78°
58°
31
76°
61°
1
78°
60°
2
82°
58°
3
83°
56°
4
83°
61°
5
84°
62°
6
82°
64°
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 76° to 90°, with overnight lows between 56° and 68°. The average high for May is 82° with an average low of 62°. 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.
