S
M
T
W
T
F
S
26
86°
67°
27
87°
69°
28
87°
69°
29
84°
68°
30
83°
68°
31
87°
69°
1
87°
68°
2
86°
69°
3
87°
67°
4
87°
68°
5
86°
66°
6
81°
67°
7
84°
62°
8
82°
63°
9
81°
62°
10
81°
62°
11
83°
67°
12
86°
67°
13
87°
66°
14
86°
61°
15
81°
61°
16
81°
66°
17
82°
66°
18
83°
61°
19
81°
61°
20
80°
60°
21
81°
60°
22
83°
61°
23
83°
59°
24
82°
59°
25
82°
61°
26
84°
64°
27
85°
65°
28
84°
64°
29
85°
66°
30
84°
63°
31
82°
57°
1
79°
56°
2
76°
57°
3
77°
57°
4
77°
58°
5
78°
56°
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 87°, with overnight lows between 56° and 69°. 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.
