S
M
T
W
T
F
S
30
78°
42°
31
80°
43°
1
79°
41°
2
78°
40°
3
76°
39°
4
79°
42°
5
80°
42°
6
79°
41°
7
77°
43°
8
79°
44°
9
78°
41°
10
78°
42°
11
74°
39°
12
71°
34°
13
71°
33°
14
74°
38°
15
75°
39°
16
69°
35°
17
73°
37°
18
74°
37°
19
70°
35°
20
69°
33°
21
68°
34°
22
66°
35°
23
65°
35°
24
66°
34°
25
67°
33°
26
72°
34°
27
72°
31°
28
67°
33°
29
72°
30°
30
72°
25°
1
63°
23°
2
64°
23°
3
65°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Monte Vista
Monte Vista's September 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 22° and 44°. The average high for September is 73° with an average low of 36°. 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 Monte Vista. See also: October | November | December.
