S
M
T
W
T
F
S
30
78°
68°
31
90°
69°
1
94°
71°
2
95°
72°
3
95°
73°
4
96°
72°
5
85°
70°
6
82°
57°
7
82°
60°
8
88°
67°
9
83°
59°
10
79°
53°
11
80°
58°
12
82°
61°
13
76°
58°
14
75°
53°
15
75°
52°
16
78°
56°
17
74°
52°
18
74°
53°
19
73°
50°
20
77°
56°
21
74°
55°
22
72°
54°
23
75°
54°
24
76°
55°
25
77°
55°
26
77°
54°
27
76°
55°
28
78°
55°
29
76°
54°
30
74°
54°
1
71°
48°
2
63°
44°
3
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Morrison
Morrison's September 2026 forecast shows daily high temperatures ranging from 62° to 88°, with overnight lows between 39° and 67°. The average high for September is 76° with an average low of 54°. 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 Morrison. See also: October | November | December.