S
M
T
W
T
F
S
30
82°
52°
31
82°
55°
1
84°
52°
2
82°
52°
3
81°
54°
4
83°
51°
5
82°
53°
6
81°
52°
7
80°
49°
8
81°
55°
9
82°
54°
10
81°
48°
11
79°
50°
12
80°
53°
13
78°
51°
14
81°
53°
15
Hist. Avg.
80°
49°
16
Hist. Avg.
80°
49°
17
Hist. Avg.
79°
49°
18
Hist. Avg.
79°
48°
19
Hist. Avg.
78°
48°
20
Hist. Avg.
78°
47°
21
Hist. Avg.
78°
47°
22
Hist. Avg.
77°
47°
23
Hist. Avg.
77°
46°
24
Hist. Avg.
76°
46°
25
Hist. Avg.
76°
45°
26
Hist. Avg.
76°
45°
27
Hist. Avg.
75°
44°
28
Hist. Avg.
75°
44°
29
Hist. Avg.
74°
44°
30
Hist. Avg.
74°
43°
1
Hist. Avg.
73°
43°
2
Hist. Avg.
73°
42°
3
Hist. Avg.
72°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Montrose
Montrose's September 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 48° and 55°. The average high for September is 81° with an average low of 52°. 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 Montrose. See also: October | November | December.
