S
M
T
W
T
F
S
30
89°
59°
31
92°
60°
1
92°
60°
2
91°
59°
3
92°
59°
4
92°
62°
5
91°
61°
6
91°
62°
7
90°
62°
8
91°
60°
9
89°
59°
10
85°
63°
11
90°
62°
12
86°
59°
13
84°
59°
14
82°
56°
15
84°
55°
16
89°
56°
17
88°
61°
18
89°
59°
19
Hist. Avg.
86°
58°
20
Hist. Avg.
86°
58°
21
Hist. Avg.
86°
58°
22
Hist. Avg.
86°
58°
23
Hist. Avg.
85°
58°
24
Hist. Avg.
85°
58°
25
Hist. Avg.
85°
58°
26
Hist. Avg.
84°
58°
27
Hist. Avg.
84°
58°
28
Hist. Avg.
84°
57°
29
Hist. Avg.
84°
57°
30
Hist. Avg.
83°
57°
1
Hist. Avg.
83°
57°
2
Hist. Avg.
83°
57°
3
Hist. Avg.
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Pittsburg
Pittsburg's September 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 55° and 63°. The average high for September is 89° with an average low of 60°. 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.
