S
M
T
W
T
F
S
30
68°
48°
31
67°
49°
1
65°
52°
2
65°
50°
3
64°
51°
4
63°
52°
5
65°
51°
6
63°
49°
7
64°
48°
8
63°
49°
9
65°
48°
10
66°
51°
11
65°
50°
12
64°
50°
13
62°
49°
14
60°
46°
15
60°
46°
16
61°
47°
17
60°
44°
18
60°
45°
19
59°
46°
20
60°
45°
21
60°
45°
22
61°
46°
23
60°
47°
24
59°
46°
25
60°
46°
26
61°
49°
27
61°
48°
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 68°, with overnight lows between 44° and 52°. The average high for September is 62° with an average low of 48°. 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.
