S
M
T
W
T
F
S
30
81°
65°
31
83°
68°
1
90°
69°
2
91°
73°
3
86°
68°
4
77°
67°
5
79°
59°
6
77°
54°
7
78°
52°
8
81°
56°
9
75°
68°
10
78°
56°
11
77°
49°
12
84°
62°
13
74°
51°
14
69°
59°
15
79°
62°
16
71°
62°
17
72°
54°
18
74°
59°
19
76°
61°
20
73°
57°
21
67°
57°
22
70°
53°
23
71°
54°
24
70°
53°
25
73°
53°
26
71°
54°
27
75°
54°
28
74°
53°
29
72°
53°
30
69°
54°
1
72°
52°
2
72°
50°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Watertown Charter Township
Watertown Charter Township's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 50° and 62°. The average high for September is 72° with an average low of 55°. 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 Watertown Charter Township. See also: October | November | December.
