S
M
T
W
T
F
S
30
87°
65°
31
84°
63°
1
85°
65°
2
84°
64°
3
85°
65°
4
85°
65°
5
86°
64°
6
84°
64°
7
85°
63°
8
82°
63°
9
81°
58°
10
80°
60°
11
82°
60°
12
87°
60°
13
86°
59°
14
82°
60°
15
84°
61°
16
85°
60°
17
84°
61°
18
80°
60°
19
78°
58°
20
77°
57°
21
77°
59°
22
76°
59°
23
76°
55°
24
74°
50°
25
75°
54°
26
75°
57°
27
77°
57°
28
75°
49°
29
74°
47°
30
71°
49°
1
74°
51°
2
79°
48°
3
80°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Four Corners Monument
Four Corners Monument's September 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 47° and 65°. The average high for September is 80° with an average low of 58°. 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 Four Corners Monument. See also: October | November | December.
