S
M
T
W
T
F
S
30
94°
71°
31
96°
72°
1
96°
74°
2
97°
73°
3
98°
74°
4
94°
71°
5
92°
71°
6
95°
71°
7
98°
72°
8
90°
72°
9
91°
69°
10
93°
68°
11
95°
67°
12
94°
66°
13
95°
68°
14
91°
64°
15
92°
63°
16
91°
63°
17
87°
62°
18
83°
65°
19
85°
66°
20
85°
65°
21
88°
65°
22
89°
66°
23
89°
65°
24
88°
64°
25
85°
64°
26
80°
63°
27
81°
59°
28
79°
54°
29
78°
53°
30
79°
53°
1
78°
54°
2
81°
54°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Morton
Morton's September 2026 forecast shows daily high temperatures ranging from 74° to 98°, with overnight lows between 53° and 72°. The average high for September is 87° with an average low of 64°. 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 Morton. See also: October | November | December.