S
M
T
W
T
F
S
26
60°
43°
27
73°
41°
28
70°
50°
29
64°
47°
30
51°
42°
1
55°
34°
2
47°
34°
3
58°
34°
4
72°
48°
5
75°
59°
6
60°
46°
7
62°
44°
8
62°
52°
9
68°
53°
10
62°
44°
11
59°
37°
12
60°
45°
13
60°
46°
14
64°
48°
15
70°
53°
16
74°
52°
17
73°
54°
18
75°
58°
19
76°
56°
20
77°
51°
21
68°
47°
22
67°
51°
23
68°
51°
24
69°
48°
25
69°
49°
26
70°
49°
27
70°
50°
28
71°
49°
29
74°
51°
30
76°
54°
31
79°
59°
1
75°
58°
2
77°
55°
3
80°
60°
4
81°
61°
5
80°
61°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pittsburgh
Pittsburgh's May 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 37° and 61°. The average high for May is 71° with an average low of 52°. 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 Pittsburgh. See also: June | July | August.
