S
M
T
W
T
F
S
26
84°
59°
27
83°
63°
28
81°
61°
29
78°
56°
30
78°
57°
31
81°
62°
1
83°
64°
2
79°
64°
3
85°
63°
4
85°
63°
5
81°
59°
6
79°
63°
7
85°
63°
8
83°
62°
9
84°
63°
10
82°
61°
11
81°
60°
12
83°
63°
13
84°
62°
14
77°
56°
15
76°
55°
16
76°
56°
17
77°
60°
18
81°
62°
19
77°
62°
20
83°
61°
21
84°
61°
22
76°
58°
23
80°
60°
24
77°
57°
25
79°
59°
26
84°
57°
27
82°
53°
28
76°
51°
29
73°
52°
30
75°
52°
31
75°
59°
1
76°
60°
2
79°
60°
3
78°
53°
4
76°
49°
5
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ann Arbor
Ann Arbor's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 49° and 64°. The average high for August is 80° with an average low of 59°. 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 Ann Arbor. See also: September | October | November.
