S
M
T
W
T
F
S
30
96°
69°
31
96°
72°
1
95°
74°
2
96°
74°
3
97°
73°
4
97°
75°
5
96°
74°
6
99°
75°
7
99°
73°
8
96°
75°
9
94°
74°
10
95°
75°
11
94°
73°
12
97°
73°
13
94°
71°
14
93°
69°
15
90°
70°
16
89°
66°
17
89°
69°
18
89°
69°
19
90°
68°
20
91°
69°
21
91°
70°
22
90°
70°
23
91°
69°
24
90°
68°
25
90°
68°
26
85°
66°
27
81°
62°
28
80°
58°
29
79°
56°
30
80°
57°
1
83°
59°
2
85°
61°
3
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in County Side
County Side's September 2026 forecast shows daily high temperatures ranging from 78° to 99°, with overnight lows between 56° and 75°. The average high for September is 90° with an average low of 68°. 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 County Side. See also: October | November | December.