S
M
T
W
T
F
S
30
101°
77°
31
100°
75°
1
100°
76°
2
98°
74°
3
97°
75°
4
96°
71°
5
95°
75°
6
94°
72°
7
92°
70°
8
91°
69°
9
93°
71°
10
93°
71°
11
91°
69°
12
91°
68°
13
90°
69°
14
91°
69°
15
90°
68°
16
90°
68°
17
89°
67°
18
88°
67°
19
89°
68°
20
89°
68°
21
88°
67°
22
89°
67°
23
88°
65°
24
89°
66°
25
88°
65°
26
87°
64°
27
87°
64°
28
85°
63°
29
79°
63°
30
84°
62°
1
85°
63°
2
85°
63°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ada
Ada's September 2026 forecast shows daily high temperatures ranging from 79° to 101°, with overnight lows between 62° and 77°. The average high for September is 90° with an average low of 68°. 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 Ada. See also: October | November | December.