S
M
T
W
T
F
S
30
87°
64°
31
91°
64°
1
85°
61°
2
88°
63°
3
88°
70°
4
91°
66°
5
82°
64°
6
79°
65°
7
79°
67°
8
81°
60°
9
77°
54°
10
78°
61°
11
82°
55°
12
75°
50°
13
68°
52°
14
65°
49°
15
69°
53°
16
77°
53°
17
73°
55°
18
74°
53°
19
71°
49°
20
75°
55°
21
67°
51°
22
71°
54°
23
72°
54°
24
74°
53°
25
70°
52°
26
71°
53°
27
72°
54°
28
72°
53°
29
70°
52°
30
70°
50°
1
60°
44°
2
58°
40°
3
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rosemount
Rosemount's September 2026 forecast shows daily high temperatures ranging from 58° to 82°, with overnight lows between 38° and 67°. The average high for September is 72° with an average low of 53°. 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 Rosemount. See also: October | November | December.
