S
M
T
W
T
F
S
30
68°
56°
31
71°
54°
1
70°
54°
2
70°
55°
3
65°
54°
4
68°
53°
5
69°
52°
6
74°
54°
7
69°
51°
8
71°
51°
9
77°
54°
10
72°
53°
11
64°
51°
12
68°
53°
13
72°
55°
14
71°
54°
15
69°
53°
16
66°
52°
17
66°
53°
18
68°
54°
19
67°
50°
20
64°
55°
21
65°
55°
22
63°
52°
23
62°
49°
24
65°
52°
25
68°
55°
26
62°
53°
27
61°
51°
28
60°
48°
29
58°
45°
30
59°
46°
1
64°
51°
2
67°
53°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cathcart
Cathcart's September 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 45° and 55°. The average high for September is 66° with an average low of 52°. 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 Cathcart. See also: October | November | December.
