S
M
T
W
T
F
S
30
90°
69°
31
89°
70°
1
90°
70°
2
90°
69°
3
87°
67°
4
83°
64°
5
83°
60°
6
83°
59°
7
84°
58°
8
85°
60°
9
83°
64°
10
86°
65°
11
87°
65°
12
85°
64°
13
86°
64°
14
84°
65°
15
85°
64°
16
85°
64°
17
84°
63°
18
83°
62°
19
83°
62°
20
84°
61°
21
84°
58°
22
82°
61°
23
83°
60°
24
83°
62°
25
84°
59°
26
82°
52°
27
72°
49°
28
72°
49°
29
71°
50°
30
71°
58°
1
75°
54°
2
75°
50°
3
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rolla
Rolla's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 49° and 70°. The average high for September is 82° with an average low of 61°. 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 Rolla. See also: October | November | December.
