S
M
T
W
T
F
S
30
97°
75°
31
99°
75°
1
100°
75°
2
102°
75°
3
101°
76°
4
100°
76°
5
87°
76°
6
97°
74°
7
96°
73°
8
93°
74°
9
94°
72°
10
94°
75°
11
83°
76°
12
92°
77°
13
92°
74°
14
97°
73°
15
97°
74°
16
93°
75°
17
91°
70°
18
96°
70°
19
98°
71°
20
92°
69°
21
92°
70°
22
92°
71°
23
88°
70°
24
81°
66°
25
82°
62°
26
82°
62°
27
80°
59°
28
80°
60°
29
82°
63°
30
79°
61°
1
79°
63°
2
81°
59°
3
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Riddle
Riddle's September 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 59° and 71°. The average high for September is 84° with an average low of 64°. 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 Riddle. See also: October | November | December.
