S
M
T
W
T
F
S
30
93°
63°
31
96°
68°
1
100°
71°
2
100°
70°
3
100°
71°
4
99°
71°
5
96°
71°
6
89°
67°
7
87°
65°
8
88°
67°
9
90°
68°
10
92°
68°
11
87°
61°
12
85°
62°
13
86°
59°
14
87°
66°
15
80°
60°
16
79°
61°
17
80°
60°
18
84°
60°
19
84°
59°
20
83°
60°
21
83°
60°
22
82°
59°
23
83°
59°
24
84°
58°
25
84°
58°
26
82°
56°
27
83°
57°
28
83°
57°
29
82°
56°
30
82°
56°
1
81°
55°
2
81°
55°
3
80°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crossville
Crossville's September 2026 forecast shows daily high temperatures ranging from 79° to 100°, with overnight lows between 54° and 71°. The average high for September is 86° with an average low of 62°. 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 Crossville. See also: October | November | December.
