S
M
T
W
T
F
S
30
80°
66°
31
86°
69°
1
87°
70°
2
93°
71°
3
93°
67°
4
88°
69°
5
80°
55°
6
79°
58°
7
79°
59°
8
82°
66°
9
84°
62°
10
77°
57°
11
73°
54°
12
74°
58°
13
77°
58°
14
75°
56°
15
77°
56°
16
79°
57°
17
78°
50°
18
73°
55°
19
77°
56°
20
76°
56°
21
75°
55°
22
73°
53°
23
71°
49°
24
72°
52°
25
75°
54°
26
73°
50°
27
64°
46°
28
63°
44°
29
62°
45°
30
62°
42°
1
61°
41°
2
61°
45°
3
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coldwater
Coldwater's September 2026 forecast shows daily high temperatures ranging from 61° to 88°, with overnight lows between 41° and 69°. The average high for September is 74° 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 Coldwater. See also: October | November | December.