S
M
T
W
T
F
S
30
79°
51°
31
75°
47°
1
72°
46°
2
70°
48°
3
70°
46°
4
71°
47°
5
70°
46°
6
69°
46°
7
70°
46°
8
70°
49°
9
69°
47°
10
68°
46°
11
69°
47°
12
69°
45°
13
68°
48°
14
69°
47°
15
67°
46°
16
68°
44°
17
67°
43°
18
67°
44°
19
70°
47°
20
Hist. Avg.
69°
47°
21
Hist. Avg.
68°
47°
22
Hist. Avg.
68°
46°
23
Hist. Avg.
67°
46°
24
Hist. Avg.
67°
46°
25
Hist. Avg.
67°
45°
26
Hist. Avg.
66°
45°
27
Hist. Avg.
66°
44°
28
Hist. Avg.
65°
44°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
64°
43°
1
Hist. Avg.
64°
43°
2
Hist. Avg.
64°
42°
3
Hist. Avg.
63°
42°
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 67° to 79°, with overnight lows between 43° and 51°. The average high for September is 70° with an average low of 46°. 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.