S
M
T
W
T
F
S
30
89°
67°
31
91°
68°
1
94°
71°
2
95°
72°
3
95°
73°
4
97°
73°
5
91°
68°
6
81°
63°
7
83°
65°
8
87°
68°
9
91°
68°
10
76°
59°
11
79°
60°
12
83°
61°
13
86°
63°
14
82°
61°
15
78°
57°
16
79°
56°
17
80°
58°
18
80°
58°
19
78°
57°
20
75°
53°
21
81°
58°
22
73°
57°
23
76°
57°
24
80°
58°
25
81°
59°
26
81°
58°
27
80°
58°
28
78°
57°
29
80°
58°
30
80°
57°
1
79°
55°
2
77°
47°
3
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Leon
St. Leon's September 2026 forecast shows daily high temperatures ranging from 66° to 91°, with overnight lows between 44° and 68°. The average high for September is 80° 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 St. Leon. See also: October | November | December.
