S
M
T
W
T
F
S
26
88°
66°
27
88°
65°
28
87°
64°
29
86°
64°
30
86°
62°
31
83°
62°
1
82°
62°
2
78°
63°
3
85°
64°
4
85°
63°
5
83°
63°
6
81°
62°
7
79°
59°
8
79°
62°
9
77°
59°
10
78°
64°
11
83°
64°
12
85°
59°
13
83°
57°
14
84°
63°
15
83°
61°
16
87°
54°
17
79°
53°
18
74°
51°
19
74°
52°
20
75°
53°
21
76°
53°
22
76°
54°
23
77°
54°
24
76°
60°
25
79°
58°
26
79°
52°
27
74°
52°
28
74°
53°
29
79°
59°
30
81°
60°
31
81°
50°
1
75°
49°
2
72°
52°
3
73°
58°
4
78°
53°
5
81°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Altoona
Altoona's August 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 48° and 66°. The average high for August is 80° with an average low of 58°. 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 Altoona. See also: September | October | November.