S
M
T
W
T
F
S
30
74°
54°
31
77°
58°
1
73°
56°
2
80°
49°
3
72°
48°
4
69°
48°
5
69°
47°
6
70°
54°
7
78°
57°
8
79°
57°
9
79°
52°
10
72°
49°
11
72°
55°
12
73°
49°
13
76°
47°
14
69°
46°
15
67°
45°
16
69°
48°
17
72°
51°
18
76°
43°
19
67°
50°
20
69°
43°
21
68°
51°
22
66°
52°
23
74°
52°
24
75°
51°
25
74°
52°
26
73°
51°
27
74°
51°
28
74°
48°
29
72°
50°
30
71°
51°
1
74°
45°
2
73°
40°
3
70°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montfort
Montfort's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 39° and 58°. The average high for September is 73° 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 Montfort. See also: October | November | December.