S
M
T
W
T
F
S
30
73°
50°
31
72°
51°
1
73°
48°
2
74°
54°
3
79°
54°
4
81°
56°
5
73°
54°
6
80°
53°
7
78°
49°
8
73°
52°
9
72°
47°
10
74°
53°
11
76°
50°
12
76°
48°
13
71°
49°
14
74°
57°
15
78°
52°
16
80°
43°
17
76°
41°
18
67°
40°
19
65°
41°
20
67°
44°
21
67°
43°
22
73°
50°
23
72°
44°
24
69°
40°
25
66°
39°
26
65°
41°
27
66°
41°
28
65°
39°
29
63°
40°
30
69°
47°
1
69°
37°
2
Hist. Avg.
67°
41°
3
Hist. Avg.
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montrose
Montrose's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 37° and 57°. The average high for September is 72° with an average low of 47°. 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.
