S
M
T
W
T
F
S
30
100°
62°
31
101°
71°
1
100°
70°
2
99°
71°
3
98°
71°
4
101°
70°
5
103°
71°
6
105°
72°
7
99°
70°
8
101°
73°
9
97°
73°
10
96°
71°
11
92°
69°
12
94°
65°
13
95°
68°
14
93°
67°
15
90°
65°
16
85°
61°
17
86°
64°
18
87°
62°
19
86°
61°
20
83°
58°
21
89°
64°
22
88°
63°
23
87°
63°
24
87°
62°
25
86°
63°
26
86°
62°
27
85°
61°
28
85°
62°
29
84°
61°
30
83°
60°
1
80°
52°
2
72°
50°
3
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kirby
Kirby's September 2026 forecast shows daily high temperatures ranging from 72° to 101°, with overnight lows between 49° and 73°. The average high for September is 88° with an average low of 63°. 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 Kirby. See also: October | November | December.
