S
M
T
W
T
F
S
26
55°
35°
27
54°
38°
28
61°
37°
29
64°
38°
30
64°
40°
1
62°
40°
2
60°
39°
3
66°
40°
4
65°
45°
5
65°
46°
6
63°
46°
7
69°
44°
8
67°
46°
9
68°
41°
10
61°
37°
11
60°
38°
12
60°
38°
13
62°
41°
14
64°
46°
15
64°
44°
16
65°
50°
17
65°
43°
18
62°
40°
19
64°
46°
20
66°
49°
21
66°
52°
22
72°
51°
23
66°
44°
24
64°
44°
25
68°
53°
26
74°
50°
27
67°
47°
28
66°
46°
29
75°
46°
30
69°
53°
31
77°
54°
1
78°
55°
2
82°
57°
3
81°
56°
4
80°
54°
5
80°
56°
6
82°
55°
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 54° to 82°, with overnight lows between 35° and 57°. The average high for May is 67° with an average low of 46°. 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.
