S
M
T
W
T
F
S
30
76°
57°
31
75°
54°
1
69°
49°
2
65°
46°
3
66°
54°
4
76°
55°
5
76°
56°
6
75°
56°
7
76°
55°
8
73°
54°
9
70°
53°
10
71°
54°
11
69°
43°
12
65°
49°
13
68°
44°
14
70°
42°
15
66°
39°
16
61°
36°
17
59°
35°
18
59°
35°
19
60°
42°
20
63°
48°
21
69°
49°
22
70°
49°
23
70°
50°
24
71°
48°
25
71°
45°
26
69°
36°
27
62°
45°
28
59°
39°
29
62°
43°
30
56°
40°
1
66°
33°
2
53°
28°
3
50°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roosevelt
Roosevelt's September 2026 forecast shows daily high temperatures ranging from 50° to 76°, with overnight lows between 28° and 57°. The average high for September is 67° 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 Roosevelt. See also: October | November | December.