S
M
T
W
T
F
S
26
87°
66°
27
87°
65°
28
86°
66°
29
87°
66°
30
86°
65°
31
83°
65°
1
81°
64°
2
81°
65°
3
82°
66°
4
83°
63°
5
82°
61°
6
81°
60°
7
81°
61°
8
84°
65°
9
81°
65°
10
81°
64°
11
82°
63°
12
81°
62°
13
81°
61°
14
82°
61°
15
82°
65°
16
81°
65°
17
86°
64°
18
85°
65°
19
84°
64°
20
85°
63°
21
81°
57°
22
79°
56°
23
79°
57°
24
81°
59°
25
82°
58°
26
86°
60°
27
87°
64°
28
87°
63°
29
83°
63°
30
87°
60°
31
85°
61°
1
83°
62°
2
85°
59°
3
85°
60°
4
86°
62°
5
86°
62°
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 87°, with overnight lows between 56° and 66°. The average high for August is 83° with an average low of 62°. 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.
