S
M
T
W
T
F
S
30
90°
73°
31
91°
77°
1
88°
78°
2
88°
78°
3
87°
77°
4
92°
76°
5
94°
76°
6
94°
75°
7
87°
76°
8
90°
75°
9
92°
77°
10
94°
77°
11
94°
77°
12
94°
77°
13
93°
75°
14
92°
77°
15
90°
77°
16
90°
73°
17
89°
72°
18
90°
74°
19
89°
71°
20
90°
73°
21
89°
72°
22
88°
71°
23
88°
72°
24
87°
71°
25
87°
73°
26
88°
73°
27
86°
72°
28
86°
72°
29
87°
71°
30
87°
72°
1
86°
72°
2
87°
71°
3
86°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Four Corners
Four Corners's September 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 71° and 77°. The average high for September is 89° with an average low of 73°. 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. See also: October | November | December.
