S
M
T
W
T
F
S
30
88°
66°
31
87°
62°
1
82°
62°
2
81°
63°
3
82°
64°
4
86°
66°
5
85°
64°
6
86°
66°
7
87°
65°
8
86°
61°
9
86°
65°
10
80°
65°
11
85°
64°
12
85°
60°
13
79°
62°
14
79°
64°
15
82°
63°
16
83°
61°
17
82°
59°
18
79°
57°
19
78°
57°
20
78°
62°
21
77°
57°
22
80°
57°
23
82°
58°
24
81°
60°
25
82°
61°
26
81°
58°
27
81°
54°
28
76°
56°
29
79°
53°
30
80°
54°
1
78°
53°
2
Hist. Avg.
78°
53°
3
Hist. Avg.
78°
53°
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 76° to 88°, with overnight lows between 53° and 66°. 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.