S
M
T
W
T
F
S
30
97°
66°
31
99°
67°
1
98°
69°
2
97°
72°
3
99°
74°
4
98°
73°
5
100°
73°
6
94°
74°
7
91°
72°
8
98°
67°
9
93°
70°
10
79°
69°
11
84°
68°
12
89°
65°
13
82°
68°
14
93°
64°
15
99°
77°
16
94°
71°
17
98°
74°
18
98°
71°
19
97°
74°
20
88°
67°
21
76°
63°
22
70°
51°
23
72°
52°
24
71°
57°
25
73°
58°
26
73°
59°
27
74°
56°
28
79°
55°
29
77°
57°
30
77°
56°
1
78°
54°
2
74°
51°
3
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Russellville
Russellville's September 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 51° and 67°. The average high for September is 75° with an average low of 57°. 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 Russellville. See also: October | November | December.