S
M
T
W
T
F
S
30
76°
54°
31
75°
55°
1
75°
53°
2
74°
51°
3
75°
53°
4
76°
56°
5
77°
59°
6
76°
56°
7
75°
56°
8
74°
58°
9
74°
51°
10
78°
49°
11
73°
50°
12
76°
53°
13
75°
49°
14
72°
56°
15
79°
57°
16
80°
57°
17
78°
56°
18
78°
46°
19
74°
46°
20
70°
47°
21
69°
50°
22
73°
54°
23
76°
54°
24
75°
52°
25
76°
43°
26
75°
42°
27
66°
42°
28
64°
43°
29
65°
43°
30
67°
49°
1
65°
49°
2
Hist. Avg.
69°
42°
3
Hist. Avg.
69°
41°
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 64° to 80°, with overnight lows between 42° and 59°. The average high for September is 74° with an average low of 51°. 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.