S
M
T
W
T
F
S
30
93°
61°
31
97°
64°
1
97°
68°
2
95°
70°
3
97°
72°
4
98°
71°
5
99°
70°
6
100°
69°
7
97°
68°
8
98°
72°
9
97°
74°
10
95°
73°
11
94°
70°
12
95°
71°
13
91°
67°
14
90°
66°
15
88°
64°
16
84°
60°
17
86°
64°
18
81°
64°
19
83°
64°
20
86°
63°
21
86°
64°
22
85°
63°
23
86°
62°
24
85°
63°
25
85°
63°
26
81°
58°
27
75°
52°
28
74°
50°
29
73°
50°
30
75°
55°
1
78°
56°
2
80°
55°
3
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sylamore
Sylamore's September 2026 forecast shows daily high temperatures ranging from 71° to 100°, with overnight lows between 50° and 74°. The average high for September is 87° with an average low of 63°. 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 Sylamore. See also: October | November | December.