S
M
T
W
T
F
S
30
98°
72°
31
98°
72°
1
91°
75°
2
95°
76°
3
86°
76°
4
91°
75°
5
93°
73°
6
91°
75°
7
96°
73°
8
0°
0°
9
92°
74°
10
94°
72°
11
97°
72°
12
98°
76°
13
96°
74°
14
99°
73°
15
98°
73°
16
97°
73°
17
91°
74°
18
95°
68°
19
94°
66°
20
96°
67°
21
98°
72°
22
99°
71°
23
98°
73°
24
97°
71°
25
95°
65°
26
92°
64°
27
95°
66°
28
94°
70°
29
93°
75°
30
93°
75°
1
88°
72°
2
80°
68°
3
80°
65°
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 80° to 94°, with overnight lows between 65° and 75°. The average high for September is 88° with an average low of 71°. 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.