S
M
T
W
T
F
S
30
93°
62°
31
92°
61°
1
92°
62°
2
91°
63°
3
92°
63°
4
92°
60°
5
91°
57°
6
88°
55°
7
84°
59°
8
86°
60°
9
90°
61°
10
90°
62°
11
91°
61°
12
88°
59°
13
89°
59°
14
89°
58°
15
86°
56°
16
83°
55°
17
85°
57°
18
89°
60°
19
89°
61°
20
88°
59°
21
86°
60°
22
82°
58°
23
80°
54°
24
82°
57°
25
82°
54°
26
81°
53°
27
80°
53°
28
78°
51°
29
80°
52°
30
79°
54°
1
78°
61°
2
83°
60°
3
86°
59°
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 78° to 93°, with overnight lows between 51° and 63°. The average high for September is 86° with an average low of 58°. 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.
