S
M
T
W
T
F
S
30
67°
52°
31
66°
52°
1
66°
51°
2
65°
52°
3
65°
52°
4
66°
51°
5
66°
51°
6
65°
52°
7
66°
51°
8
65°
51°
9
65°
48°
10
64°
50°
11
64°
51°
12
63°
50°
13
64°
49°
14
62°
49°
15
60°
51°
16
62°
47°
17
63°
46°
18
60°
50°
19
62°
51°
20
62°
49°
21
63°
50°
22
64°
49°
23
60°
48°
24
59°
48°
25
Hist. Avg.
59°
45°
26
Hist. Avg.
58°
45°
27
Hist. Avg.
58°
45°
28
Hist. Avg.
58°
45°
29
Hist. Avg.
58°
45°
30
Hist. Avg.
58°
45°
1
Hist. Avg.
57°
44°
2
Hist. Avg.
57°
44°
3
Hist. Avg.
57°
44°
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 59° to 67°, with overnight lows between 46° and 52°. The average high for September is 64° with an average low of 50°. 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.
