S
M
T
W
T
F
S
30
76°
52°
31
75°
51°
1
76°
52°
2
74°
50°
3
73°
49°
4
74°
50°
5
75°
54°
6
73°
53°
7
72°
52°
8
76°
49°
9
72°
49°
10
75°
56°
11
77°
55°
12
78°
56°
13
79°
48°
14
74°
53°
15
72°
47°
16
72°
48°
17
68°
55°
18
76°
52°
19
75°
51°
20
73°
44°
21
77°
43°
22
68°
41°
23
73°
49°
24
74°
52°
25
Hist. Avg.
71°
49°
26
Hist. Avg.
70°
49°
27
Hist. Avg.
70°
48°
28
Hist. Avg.
69°
48°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
68°
47°
1
Hist. Avg.
68°
47°
2
Hist. Avg.
68°
46°
3
Hist. Avg.
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mattawan
Mattawan's September 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 41° and 56°. The average high for September is 74° with an average low of 50°. 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 Mattawan. See also: October | November | December.
