S
M
T
W
T
F
S
30
95°
71°
31
96°
70°
1
96°
72°
2
95°
72°
3
96°
71°
4
96°
72°
5
95°
73°
6
96°
72°
7
97°
69°
8
89°
69°
9
88°
68°
10
90°
68°
11
91°
70°
12
93°
70°
13
92°
69°
14
93°
70°
15
92°
69°
16
92°
63°
17
87°
65°
18
85°
69°
19
86°
61°
20
91°
60°
21
84°
58°
22
82°
61°
23
83°
60°
24
84°
61°
25
83°
61°
26
84°
63°
27
88°
66°
28
89°
68°
29
89°
67°
30
87°
67°
1
88°
65°
2
88°
58°
3
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Copperas Cove
Copperas Cove's September 2026 forecast shows daily high temperatures ranging from 82° to 97°, with overnight lows between 58° and 73°. The average high for September is 90° with an average low of 67°. 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 Copperas Cove. See also: October | November | December.