S
M
T
W
T
F
S
26
86°
71°
27
87°
71°
28
90°
72°
29
88°
71°
30
89°
71°
31
89°
70°
1
90°
70°
2
88°
71°
3
89°
72°
4
91°
71°
5
89°
71°
6
86°
70°
7
89°
71°
8
89°
67°
9
83°
64°
10
82°
64°
11
83°
67°
12
83°
70°
13
84°
70°
14
86°
69°
15
88°
70°
16
85°
69°
17
88°
62°
18
83°
62°
19
84°
67°
20
88°
68°
21
89°
69°
22
88°
68°
23
89°
69°
24
88°
67°
25
86°
66°
26
81°
64°
27
81°
62°
28
80°
62°
29
81°
63°
30
81°
63°
31
84°
67°
1
87°
67°
2
87°
66°
3
86°
62°
4
85°
58°
5
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bethesda
Bethesda's August 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 58° and 72°. The average high for August is 86° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Bethesda. See also: September | October | November.
