S
M
T
W
T
F
S
30
103°
71°
31
102°
70°
1
101°
74°
2
101°
73°
3
97°
74°
4
100°
73°
5
102°
74°
6
105°
74°
7
103°
74°
8
104°
77°
9
104°
79°
10
87°
70°
11
89°
71°
12
95°
72°
13
98°
77°
14
97°
77°
15
99°
75°
16
98°
74°
17
92°
66°
18
88°
65°
19
79°
62°
20
81°
58°
21
82°
62°
22
86°
63°
23
83°
58°
24
82°
59°
25
87°
66°
26
87°
66°
27
86°
65°
28
86°
65°
29
84°
64°
30
85°
63°
1
85°
62°
2
84°
63°
3
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mounds
Mounds's September 2026 forecast shows daily high temperatures ranging from 79° to 99°, with overnight lows between 58° and 77°. The average high for September is 88° with an average low of 66°. 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 Mounds. See also: October | November | December.
