S
M
T
W
T
F
S
26
83°
61°
27
83°
61°
28
76°
65°
29
76°
63°
30
78°
59°
31
82°
56°
1
81°
58°
2
78°
67°
3
79°
58°
4
81°
54°
5
83°
64°
6
83°
68°
7
84°
67°
8
83°
65°
9
84°
62°
10
83°
62°
11
78°
65°
12
80°
64°
13
81°
67°
14
77°
63°
15
82°
62°
16
79°
69°
17
84°
67°
18
80°
59°
19
79°
56°
20
70°
58°
21
72°
54°
22
78°
52°
23
76°
58°
24
71°
54°
25
75°
56°
26
79°
52°
27
84°
58°
28
80°
55°
29
80°
61°
30
85°
66°
31
85°
68°
1
89°
70°
2
93°
69°
3
84°
63°
4
81°
60°
5
76°
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 76° to 93°, with overnight lows between 58° and 70°. The average high for August is 84° with an average low of 64°. 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.