S
M
T
W
T
F
S
30
80°
52°
31
82°
53°
1
83°
54°
2
85°
54°
3
88°
55°
4
89°
55°
5
88°
52°
6
81°
48°
7
85°
53°
8
82°
47°
9
75°
49°
10
77°
53°
11
74°
52°
12
75°
51°
13
75°
51°
14
76°
43°
15
72°
39°
16
73°
41°
17
72°
44°
18
Hist. Avg.
75°
46°
19
Hist. Avg.
75°
45°
20
Hist. Avg.
74°
45°
21
Hist. Avg.
74°
44°
22
Hist. Avg.
74°
44°
23
Hist. Avg.
73°
44°
24
Hist. Avg.
73°
43°
25
Hist. Avg.
72°
43°
26
Hist. Avg.
72°
43°
27
Hist. Avg.
71°
42°
28
Hist. Avg.
71°
42°
29
Hist. Avg.
70°
41°
30
Hist. Avg.
70°
41°
1
Hist. Avg.
69°
41°
2
Hist. Avg.
69°
40°
3
Hist. Avg.
68°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Royal City
Royal City's September 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 39° and 55°. The average high for September is 80° with an average low of 50°. 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 Royal City. See also: October | November | December.