S
M
T
W
T
F
S
26
84°
65°
27
85°
65°
28
84°
64°
29
83°
63°
30
79°
61°
31
74°
59°
1
74°
56°
2
75°
56°
3
78°
62°
4
80°
62°
5
78°
61°
6
79°
63°
7
79°
62°
8
76°
60°
9
75°
58°
10
74°
54°
11
76°
58°
12
80°
61°
13
79°
62°
14
83°
61°
15
82°
60°
16
80°
61°
17
83°
57°
18
77°
53°
19
74°
53°
20
71°
52°
21
72°
51°
22
73°
51°
23
75°
52°
24
76°
53°
25
77°
52°
26
78°
53°
27
78°
58°
28
80°
53°
29
77°
57°
30
77°
57°
31
76°
50°
1
77°
47°
2
70°
48°
3
69°
52°
4
72°
58°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Barrhaven
Barrhaven's August 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 47° and 65°. The average high for August is 77° with an average low of 57°. 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 Barrhaven. See also: September | October | November.
