S
M
T
W
T
F
S
30
83°
61°
31
82°
60°
1
83°
58°
2
81°
58°
3
81°
57°
4
82°
59°
5
81°
61°
6
81°
62°
7
86°
57°
8
83°
60°
9
84°
65°
10
85°
65°
11
86°
64°
12
87°
55°
13
83°
62°
14
79°
63°
15
83°
63°
16
81°
62°
17
86°
55°
18
82°
54°
19
76°
61°
20
81°
52°
21
83°
51°
22
74°
50°
23
75°
59°
24
79°
60°
25
Hist. Avg.
76°
52°
26
Hist. Avg.
76°
51°
27
Hist. Avg.
76°
51°
28
Hist. Avg.
75°
50°
29
Hist. Avg.
75°
50°
30
Hist. Avg.
74°
49°
1
Hist. Avg.
74°
49°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Roscoe
Roscoe's September 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 50° and 65°. The average high for September is 82° with an average low of 59°. 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 Roscoe. See also: October | November | December.