S
M
T
W
T
F
S
26
58°
43°
27
71°
39°
28
58°
42°
29
59°
49°
30
65°
48°
1
67°
38°
2
60°
45°
3
62°
42°
4
75°
39°
5
84°
58°
6
69°
56°
7
66°
50°
8
68°
42°
9
64°
51°
10
75°
49°
11
64°
48°
12
68°
38°
13
73°
53°
14
60°
51°
15
71°
50°
16
83°
47°
17
87°
60°
18
96°
63°
19
95°
68°
20
91°
66°
21
70°
55°
22
66°
52°
23
53°
49°
24
63°
50°
25
75°
58°
26
79°
60°
27
83°
65°
28
78°
60°
29
78°
50°
30
66°
48°
31
74°
52°
1
75°
52°
2
73°
52°
3
78°
54°
4
82°
60°
5
84°
62°
6
87°
66°
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 66° to 87°, with overnight lows between 48° and 66°. The average high for May is 77° with an average low of 56°. 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.
