S
M
T
W
T
F
S
26
85°
69°
27
90°
72°
28
91°
69°
29
85°
70°
30
86°
72°
31
88°
71°
1
90°
71°
2
84°
75°
3
89°
75°
4
88°
73°
5
89°
75°
6
91°
75°
7
92°
74°
8
93°
74°
9
94°
76°
10
93°
71°
11
89°
71°
12
87°
74°
13
90°
76°
14
85°
79°
15
89°
74°
16
81°
72°
17
94°
74°
18
89°
75°
19
90°
70°
20
92°
68°
21
84°
65°
22
79°
68°
23
87°
67°
24
80°
57°
25
82°
60°
26
86°
66°
27
84°
68°
28
83°
67°
29
84°
67°
30
87°
65°
31
84°
64°
1
80°
62°
2
80°
62°
3
81°
63°
4
81°
62°
5
82°
61°
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 80° to 87°, with overnight lows between 57° and 68°. The average high for August is 83° with an average low of 63°. 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.
