S
M
T
W
T
F
S
30
94°
70°
31
100°
72°
1
100°
73°
2
100°
76°
3
99°
77°
4
99°
76°
5
100°
73°
6
89°
70°
7
89°
64°
8
97°
64°
9
84°
70°
10
78°
67°
11
83°
66°
12
89°
63°
13
81°
60°
14
88°
58°
15
96°
73°
16
90°
70°
17
98°
72°
18
94°
73°
19
92°
74°
20
83°
64°
21
70°
60°
22
66°
50°
23
68°
55°
24
71°
57°
25
71°
54°
26
71°
52°
27
72°
52°
28
74°
54°
29
77°
53°
30
76°
54°
1
74°
52°
2
74°
48°
3
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pittsfield
Pittsfield's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 48° and 64°. The average high for September is 73° with an average low of 54°. 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 Pittsfield. See also: October | November | December.