S
M
T
W
T
F
S
30
91°
71°
31
87°
67°
1
90°
60°
2
89°
60°
3
87°
61°
4
86°
62°
5
89°
68°
6
85°
71°
7
94°
69°
8
89°
68°
9
88°
66°
10
93°
68°
11
90°
69°
12
92°
67°
13
89°
68°
14
90°
64°
15
93°
68°
16
92°
67°
17
92°
66°
18
89°
63°
19
85°
62°
20
87°
63°
21
90°
64°
22
90°
65°
23
89°
65°
24
86°
61°
25
82°
58°
26
82°
58°
27
81°
57°
28
82°
58°
29
84°
60°
30
84°
61°
1
82°
59°
2
85°
61°
3
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Covina
Covina's September 2026 forecast shows daily high temperatures ranging from 81° to 94°, with overnight lows between 57° and 71°. The average high for September is 88° with an average low of 64°. 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 Covina. See also: October | November | December.
