S
M
T
W
T
F
S
26
61°
41°
27
59°
43°
28
58°
42°
29
60°
43°
30
58°
42°
1
58°
41°
2
57°
43°
3
54°
41°
4
55°
42°
5
55°
41°
6
56°
41°
7
55°
42°
8
55°
42°
9
56°
46°
10
56°
46°
11
57°
47°
12
59°
46°
13
62°
48°
14
63°
48°
15
61°
47°
16
60°
47°
17
63°
48°
18
60°
46°
19
59°
49°
20
59°
48°
21
60°
47°
22
58°
46°
23
59°
48°
24
59°
49°
25
60°
48°
26
59°
49°
27
61°
50°
28
60°
50°
29
60°
49°
30
61°
50°
31
60°
49°
1
65°
50°
2
65°
51°
3
64°
46°
4
62°
46°
5
64°
47°
6
64°
46°
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 54° to 65°, with overnight lows between 41° and 51°. The average high for May is 59° with an average low of 46°. 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.
