S
M
T
W
T
F
S
30
81°
57°
31
83°
61°
1
82°
61°
2
80°
59°
3
82°
51°
4
75°
51°
5
74°
54°
6
76°
59°
7
81°
58°
8
78°
55°
9
74°
56°
10
75°
58°
11
79°
57°
12
82°
58°
13
81°
58°
14
82°
57°
15
81°
56°
16
79°
56°
17
75°
48°
18
74°
48°
19
71°
45°
20
70°
45°
21
69°
46°
22
70°
51°
23
70°
46°
24
73°
46°
25
71°
52°
26
74°
52°
27
73°
53°
28
76°
51°
29
75°
50°
30
74°
48°
1
69°
49°
2
74°
50°
3
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leo
Leo's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 44° and 61°. The average high for September is 76° with an average low of 53°. 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 Leo. See also: October | November | December.