S
M
T
W
T
F
S
30
102°
80°
31
85°
68°
1
92°
70°
2
96°
75°
3
92°
75°
4
94°
75°
5
97°
76°
6
99°
78°
7
98°
76°
8
98°
77°
9
93°
76°
10
94°
75°
11
94°
74°
12
91°
73°
13
94°
74°
14
92°
73°
15
95°
72°
16
98°
76°
17
98°
75°
18
95°
73°
19
94°
72°
20
91°
73°
21
94°
73°
22
96°
74°
23
96°
74°
24
93°
70°
25
93°
70°
26
95°
73°
27
89°
70°
28
90°
69°
29
90°
68°
30
93°
69°
1
94°
70°
2
94°
70°
3
93°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Catalina Foothills
Catalina Foothills's September 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 68° and 78°. The average high for September is 94° 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 Catalina Foothills. See also: October | November | December.
