S
M
T
W
T
F
S
26
82°
64°
27
81°
65°
28
80°
65°
29
82°
63°
30
78°
66°
31
86°
66°
1
79°
63°
2
79°
60°
3
80°
65°
4
85°
66°
5
82°
65°
6
79°
65°
7
79°
64°
8
80°
60°
9
79°
62°
10
81°
64°
11
78°
61°
12
78°
58°
13
80°
64°
14
83°
65°
15
80°
64°
16
79°
60°
17
78°
58°
18
80°
64°
19
78°
64°
20
78°
62°
21
77°
64°
22
77°
63°
23
76°
63°
24
77°
64°
25
77°
64°
26
79°
63°
27
79°
64°
28
82°
61°
29
83°
59°
30
81°
59°
31
82°
60°
1
82°
61°
2
83°
60°
3
82°
61°
4
80°
60°
5
77°
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 76° to 86°, with overnight lows between 58° and 66°. The average high for August is 80° 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.
