S
M
T
W
T
F
S
26
84°
70°
27
89°
71°
28
88°
70°
29
89°
66°
30
84°
68°
31
87°
70°
1
86°
66°
2
87°
70°
3
88°
70°
4
89°
65°
5
88°
64°
6
82°
65°
7
83°
65°
8
82°
66°
9
85°
70°
10
87°
70°
11
87°
69°
12
86°
70°
13
88°
68°
14
85°
69°
15
84°
68°
16
82°
69°
17
84°
68°
18
87°
69°
19
84°
67°
20
84°
68°
21
87°
68°
22
Hist. Avg.
83°
67°
23
Hist. Avg.
83°
66°
24
Hist. Avg.
82°
66°
25
Hist. Avg.
82°
66°
26
Hist. Avg.
82°
66°
27
Hist. Avg.
82°
66°
28
Hist. Avg.
82°
66°
29
Hist. Avg.
82°
65°
30
Hist. Avg.
81°
65°
31
Hist. Avg.
81°
65°
1
Hist. Avg.
81°
65°
2
Hist. Avg.
81°
64°
3
Hist. Avg.
80°
64°
4
Hist. Avg.
80°
64°
5
Hist. Avg.
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Potomac
Potomac's August 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 64° and 71°. The average high for August is 86° with an average low of 68°. 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 Potomac. See also: September | October | November.
