S
M
T
W
T
F
S
30
100°
72°
31
97°
72°
1
100°
72°
2
101°
72°
3
100°
72°
4
100°
73°
5
99°
73°
6
99°
72°
7
92°
68°
8
91°
69°
9
90°
67°
10
91°
68°
11
92°
70°
12
91°
69°
13
93°
66°
14
89°
74°
15
88°
74°
16
88°
67°
17
84°
68°
18
85°
69°
19
86°
68°
20
87°
68°
21
86°
69°
22
85°
69°
23
84°
68°
24
85°
69°
25
85°
68°
26
86°
69°
27
85°
69°
28
85°
68°
29
86°
68°
30
85°
66°
1
86°
66°
2
85°
68°
3
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Santa Fe
Santa Fe's September 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 66° and 74°. The average high for September is 87° with an average low of 68°. 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 Santa Fe. See also: October | November | December.