S
M
T
W
T
F
S
30
110°
86°
31
107°
83°
1
105°
82°
2
106°
78°
3
103°
72°
4
103°
77°
5
102°
72°
6
99°
79°
7
102°
77°
8
110°
80°
9
109°
89°
10
113°
90°
11
110°
88°
12
108°
85°
13
107°
83°
14
108°
75°
15
103°
83°
16
103°
80°
17
100°
78°
18
102°
74°
19
103°
65°
20
102°
69°
21
102°
75°
22
98°
65°
23
103°
69°
24
96°
78°
25
102°
73°
26
104°
73°
27
94°
77°
28
89°
69°
29
93°
63°
30
98°
67°
1
100°
67°
2
105°
70°
3
103°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Imperial
Imperial's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Imperial. See also: October | November | December.
