S
M
T
W
T
F
S
30
86°
60°
31
82°
58°
1
81°
58°
2
80°
59°
3
81°
60°
4
83°
64°
5
87°
64°
6
83°
63°
7
83°
58°
8
80°
57°
9
79°
56°
10
79°
55°
11
80°
55°
12
77°
56°
13
76°
55°
14
77°
58°
15
78°
57°
16
79°
57°
17
80°
56°
18
81°
55°
19
82°
59°
20
Hist. Avg.
79°
56°
21
Hist. Avg.
79°
55°
22
Hist. Avg.
79°
55°
23
Hist. Avg.
78°
54°
24
Hist. Avg.
78°
54°
25
Hist. Avg.
78°
54°
26
Hist. Avg.
77°
53°
27
Hist. Avg.
77°
53°
28
Hist. Avg.
77°
53°
29
Hist. Avg.
76°
52°
30
Hist. Avg.
76°
52°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
75°
51°
3
Hist. Avg.
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Imperial
Imperial's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 55° and 64°. The average high for September is 81° with an average low of 58°. 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.
