S
M
T
W
T
F
S
30
75°
57°
31
77°
53°
1
78°
51°
2
74°
50°
3
73°
54°
4
76°
60°
5
80°
56°
6
80°
50°
7
73°
50°
8
72°
51°
9
76°
56°
10
73°
55°
11
74°
56°
12
71°
55°
13
71°
50°
14
70°
47°
15
68°
46°
16
69°
50°
17
70°
53°
18
75°
54°
19
77°
55°
20
78°
53°
21
75°
47°
22
73°
52°
23
68°
45°
24
74°
44°
25
66°
43°
26
66°
44°
27
Hist. Avg.
67°
47°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
46°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
65°
45°
2
Hist. Avg.
65°
45°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Coldwater
Coldwater's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 43° and 60°. The average high for September is 73° with an average low of 51°. 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.