S
M
T
W
T
F
S
30
79°
60°
31
80°
59°
1
81°
54°
2
77°
54°
3
80°
52°
4
78°
54°
5
80°
57°
6
80°
58°
7
79°
50°
8
71°
47°
9
70°
55°
10
71°
56°
11
74°
49°
12
77°
58°
13
77°
55°
14
76°
56°
15
76°
56°
16
79°
55°
17
Hist. Avg.
71°
51°
18
Hist. Avg.
71°
50°
19
Hist. Avg.
70°
50°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
49°
22
Hist. Avg.
69°
49°
23
Hist. Avg.
69°
48°
24
Hist. Avg.
68°
48°
25
Hist. Avg.
68°
47°
26
Hist. Avg.
68°
47°
27
Hist. Avg.
67°
46°
28
Hist. Avg.
67°
46°
29
Hist. Avg.
66°
46°
30
Hist. Avg.
66°
45°
1
Hist. Avg.
66°
45°
2
Hist. Avg.
65°
44°
3
Hist. Avg.
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rosemount
Rosemount's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 47° and 60°. The average high for September is 77° with an average low of 55°. 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.
