S
M
T
W
T
F
S
26
80°
61°
27
80°
60°
28
81°
61°
29
79°
58°
30
77°
64°
31
78°
64°
1
81°
63°
2
82°
65°
3
83°
65°
4
83°
64°
5
82°
62°
6
77°
59°
7
83°
64°
8
84°
63°
9
81°
65°
10
84°
64°
11
81°
60°
12
83°
64°
13
83°
64°
14
82°
59°
15
76°
57°
16
75°
56°
17
75°
61°
18
76°
63°
19
76°
64°
20
78°
63°
21
79°
63°
22
80°
62°
23
77°
59°
24
84°
57°
25
81°
62°
26
83°
62°
27
79°
61°
28
81°
62°
29
75°
55°
30
74°
54°
31
74°
57°
1
75°
61°
2
72°
62°
3
80°
62°
4
81°
61°
5
80°
58°
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 84°, with overnight lows between 54° and 65°. The average high for August is 79° with an average low of 61°. 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.