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°
73°
7
103°
76°
8
102°
76°
9
104°
73°
10
91°
68°
11
97°
74°
12
99°
71°
13
95°
71°
14
94°
68°
15
85°
67°
16
96°
69°
17
90°
69°
18
92°
68°
19
84°
61°
20
81°
67°
21
89°
67°
22
88°
67°
23
89°
66°
24
87°
66°
25
78°
65°
26
81°
65°
27
82°
64°
28
85°
65°
29
83°
65°
30
81°
57°
1
73°
51°
2
72°
51°
3
71°
50°
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 71° to 105°, with overnight lows between 50° and 76°. 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.
