S
M
T
W
T
F
S
30
99°
67°
31
100°
74°
1
100°
75°
2
100°
77°
3
98°
76°
4
100°
75°
5
102°
76°
6
104°
78°
7
101°
79°
8
103°
73°
9
100°
77°
10
99°
77°
11
90°
72°
12
99°
72°
13
98°
71°
14
99°
75°
15
98°
75°
16
98°
78°
17
98°
77°
18
100°
71°
19
100°
71°
20
95°
73°
21
94°
72°
22
89°
66°
23
85°
64°
24
85°
63°
25
82°
62°
26
83°
61°
27
83°
64°
28
88°
62°
29
86°
61°
30
90°
65°
1
86°
60°
2
77°
64°
3
84°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Royal
Royal's September 2026 forecast shows daily high temperatures ranging from 77° to 100°, with overnight lows between 60° and 73°. The average high for September is 88° with an average low of 65°. 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. See also: October | November | December.
