S
M
T
W
T
F
S
30
93°
67°
31
91°
68°
1
94°
69°
2
97°
68°
3
97°
70°
4
99°
70°
5
93°
72°
6
93°
70°
7
90°
68°
8
88°
65°
9
90°
65°
10
89°
69°
11
83°
68°
12
85°
67°
13
88°
63°
14
89°
62°
15
88°
64°
16
84°
59°
17
81°
60°
18
80°
57°
19
79°
54°
20
77°
52°
21
76°
53°
22
81°
57°
23
82°
58°
24
82°
57°
25
81°
57°
26
82°
56°
27
82°
57°
28
81°
57°
29
81°
56°
30
80°
55°
1
81°
55°
2
77°
49°
3
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mascot
Mascot's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 44° and 69°. The average high for September is 82° 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 Mascot. See also: October | November | December.