S
M
T
W
T
F
S
30
91°
69°
31
91°
68°
1
93°
69°
2
92°
69°
3
89°
68°
4
87°
66°
5
87°
63°
6
88°
62°
7
92°
67°
8
92°
68°
9
90°
68°
10
91°
67°
11
91°
66°
12
90°
65°
13
90°
64°
14
89°
65°
15
90°
65°
16
83°
59°
17
86°
63°
18
83°
61°
19
Hist. Avg.
88°
62°
20
Hist. Avg.
87°
62°
21
Hist. Avg.
87°
62°
22
Hist. Avg.
87°
61°
23
Hist. Avg.
86°
61°
24
Hist. Avg.
86°
60°
25
Hist. Avg.
86°
60°
26
Hist. Avg.
85°
60°
27
Hist. Avg.
85°
59°
28
Hist. Avg.
85°
59°
29
Hist. Avg.
84°
58°
30
Hist. Avg.
84°
58°
1
Hist. Avg.
84°
58°
2
Hist. Avg.
83°
57°
3
Hist. Avg.
83°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Magnolia
Magnolia's September 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 59° and 69°. The average high for September is 89° 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 Magnolia. See also: October | November | December.