S
M
T
W
T
F
S
30
80°
52°
31
80°
55°
1
79°
55°
2
79°
47°
3
78°
44°
4
70°
46°
5
71°
53°
6
75°
52°
7
78°
47°
8
70°
44°
9
69°
46°
10
72°
52°
11
69°
53°
12
77°
53°
13
76°
51°
14
76°
50°
15
74°
43°
16
67°
48°
17
67°
43°
18
66°
41°
19
67°
40°
20
64°
38°
21
62°
41°
22
64°
48°
23
66°
41°
24
65°
40°
25
64°
48°
26
68°
47°
27
69°
48°
28
71°
42°
29
70°
43°
30
60°
43°
1
62°
44°
2
67°
44°
3
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roscommon Township
Roscommon Township's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 38° and 55°. The average high for September is 70° with an average low of 47°. 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 Roscommon Township. See also: October | November | December.
