S
M
T
W
T
F
S
26
74°
52°
27
80°
50°
28
75°
60°
29
69°
52°
30
63°
43°
1
68°
38°
2
59°
39°
3
65°
33°
4
80°
47°
5
72°
59°
6
66°
53°
7
64°
43°
8
70°
37°
9
72°
47°
10
79°
45°
11
70°
48°
12
75°
43°
13
77°
50°
14
63°
43°
15
74°
38°
16
83°
54°
17
86°
57°
18
89°
61°
19
87°
65°
20
85°
61°
21
71°
59°
22
74°
58°
23
79°
67°
24
74°
66°
25
77°
65°
26
83°
67°
27
83°
68°
28
84°
64°
29
83°
58°
30
79°
63°
31
83°
56°
1
81°
62°
2
78°
57°
3
79°
50°
4
82°
53°
5
83°
57°
6
85°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pittsburg
Pittsburg's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Pittsburg. See also: June | July | August.