S
M
T
W
T
F
S
30
85°
63°
31
N/A
1
93°
68°
2
93°
70°
3
92°
71°
4
89°
68°
5
82°
61°
6
80°
57°
7
79°
56°
8
81°
58°
9
81°
57°
10
80°
54°
11
76°
52°
12
75°
50°
13
74°
52°
14
76°
51°
15
80°
56°
16
80°
56°
17
79°
55°
18
79°
55°
19
80°
54°
20
80°
56°
21
79°
55°
22
80°
54°
23
80°
54°
24
79°
53°
25
80°
54°
26
79°
52°
27
78°
53°
28
78°
52°
29
77°
51°
30
76°
50°
1
75°
50°
2
76°
49°
3
76°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cambridge City
Cambridge City's September 2026 forecast shows daily high temperatures ranging from 74° to 93°, with overnight lows between 49° and 71°. The average high for September is 80° with an average low of 56°. 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 Cambridge City. See also: October | November | December.