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