S
M
T
W
T
F
S
30
100°
75°
31
100°
75°
1
100°
75°
2
99°
76°
3
91°
76°
4
98°
75°
5
99°
75°
6
99°
75°
7
100°
78°
8
101°
79°
9
101°
77°
10
99°
78°
11
98°
79°
12
101°
75°
13
100°
74°
14
97°
72°
15
93°
69°
16
91°
68°
17
90°
70°
18
90°
68°
19
89°
64°
20
85°
62°
21
90°
69°
22
89°
68°
23
89°
67°
24
87°
67°
25
80°
66°
26
84°
66°
27
84°
65°
28
86°
66°
29
84°
66°
30
83°
57°
1
75°
54°
2
74°
53°
3
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Celina
Celina's September 2026 forecast shows daily high temperatures ranging from 74° to 101°, with overnight lows between 52° and 79°. The average high for September is 89° 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 Celina. See also: October | November | December.
