S
M
T
W
T
F
S
26
88°
67°
27
84°
66°
28
89°
63°
29
89°
64°
30
89°
69°
1
91°
72°
2
87°
64°
3
80°
60°
4
84°
60°
5
87°
63°
6
92°
67°
7
94°
70°
8
93°
71°
9
92°
71°
10
91°
73°
11
92°
74°
12
81°
72°
13
87°
72°
14
88°
68°
15
91°
69°
16
90°
71°
17
89°
70°
18
88°
70°
19
89°
70°
20
87°
68°
21
89°
69°
22
87°
70°
23
88°
69°
24
87°
69°
25
85°
68°
26
85°
68°
27
86°
69°
28
85°
67°
29
89°
70°
30
90°
69°
31
90°
70°
1
89°
70°
2
88°
69°
3
88°
70°
4
87°
71°
5
87°
71°
6
88°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Altoona
Altoona's May 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 67° and 71°. The average high for May is 88° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Altoona. See also: June | July | August.
