S
M
T
W
T
F
S
30
82°
67°
31
91°
70°
1
97°
74°
2
95°
71°
3
92°
73°
4
92°
73°
5
84°
72°
6
79°
66°
7
82°
60°
8
84°
71°
9
79°
66°
10
78°
55°
11
82°
62°
12
84°
64°
13
78°
66°
14
81°
64°
15
76°
58°
16
72°
55°
17
75°
56°
18
70°
51°
19
71°
49°
20
69°
54°
21
74°
52°
22
69°
58°
23
72°
57°
24
77°
58°
25
78°
58°
26
77°
57°
27
77°
58°
28
78°
58°
29
78°
59°
30
77°
57°
1
75°
52°
2
70°
46°
3
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Matteson
Matteson's September 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 43° and 71°. The average high for September is 76° with an average low of 57°. 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 Matteson. See also: October | November | December.
