S
M
T
W
T
F
S
30
86°
71°
31
91°
68°
1
96°
74°
2
97°
73°
3
95°
73°
4
95°
75°
5
95°
70°
6
84°
66°
7
86°
63°
8
86°
61°
9
86°
59°
10
91°
64°
11
93°
72°
12
90°
73°
13
90°
75°
14
93°
72°
15
84°
63°
16
88°
56°
17
89°
64°
18
91°
68°
19
85°
68°
20
88°
68°
21
86°
68°
22
82°
67°
23
81°
64°
24
83°
63°
25
80°
59°
26
79°
57°
27
77°
55°
28
81°
57°
29
77°
56°
30
80°
58°
1
75°
54°
2
80°
60°
3
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Magnolia
Magnolia's September 2026 forecast shows daily high temperatures ranging from 75° to 91°, with overnight lows between 54° and 68°. The average high for September is 82° with an average low of 61°. 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 Magnolia. See also: October | November | December.