S
M
T
W
T
F
S
30
89°
58°
31
81°
56°
1
79°
54°
2
79°
59°
3
83°
58°
4
80°
60°
5
60°
56°
6
80°
58°
7
85°
56°
8
95°
60°
9
97°
70°
10
109°
79°
11
97°
63°
12
92°
66°
13
83°
60°
14
89°
63°
15
89°
57°
16
80°
56°
17
77°
57°
18
85°
58°
19
83°
60°
20
80°
59°
21
85°
56°
22
82°
55°
23
83°
54°
24
94°
61°
25
90°
63°
26
79°
53°
27
83°
57°
28
81°
55°
29
94°
59°
30
94°
58°
1
92°
61°
2
95°
62°
3
97°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pittsburg
Pittsburg's September 2026 forecast shows daily high temperatures ranging from 81° to 97°, with overnight lows between 55° and 62°. The average high for September is 92° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Pittsburg. See also: October | November | December.
