S
M
T
W
T
F
S
26
81°
55°
27
84°
55°
28
58°
47°
29
64°
43°
30
66°
40°
1
67°
42°
2
64°
42°
3
79°
40°
4
80°
61°
5
69°
44°
6
63°
41°
7
69°
39°
8
77°
50°
9
84°
47°
10
71°
42°
11
79°
39°
12
79°
48°
13
80°
48°
14
81°
46°
15
86°
65°
16
88°
70°
17
86°
69°
18
88°
66°
19
77°
54°
20
60°
51°
21
69°
57°
22
75°
61°
23
75°
59°
24
80°
58°
25
83°
60°
26
76°
63°
27
79°
64°
28
74°
62°
29
76°
61°
30
77°
58°
31
78°
59°
1
81°
61°
2
80°
63°
3
80°
61°
4
79°
69°
5
83°
66°
6
78°
67°
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 74° to 83°, with overnight lows between 58° and 69°. The average high for May is 79° with an average low of 62°. 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.