S
M
T
W
T
F
S
30
82°
64°
31
89°
69°
1
91°
73°
2
93°
72°
3
93°
72°
4
94°
71°
5
85°
66°
6
78°
62°
7
N/A
8
85°
69°
9
89°
67°
10
77°
55°
11
80°
60°
12
82°
62°
13
82°
66°
14
84°
65°
15
78°
60°
16
75°
54°
17
78°
55°
18
78°
56°
19
75°
56°
20
73°
53°
21
77°
58°
22
71°
57°
23
73°
58°
24
79°
58°
25
80°
57°
26
80°
57°
27
78°
56°
28
80°
58°
29
80°
59°
30
79°
58°
1
79°
55°
2
76°
49°
3
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 65° to 89°, with overnight lows between 45° and 69°. The average high for September is 78° with an average low of 58°. 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.