S
M
T
W
T
F
S
26
98°
77°
27
99°
77°
28
99°
76°
29
98°
77°
30
99°
78°
31
100°
78°
1
99°
77°
2
99°
77°
3
98°
76°
4
98°
76°
5
98°
77°
6
98°
76°
7
99°
77°
8
99°
77°
9
98°
76°
10
98°
77°
11
97°
76°
12
98°
76°
13
97°
75°
14
97°
74°
15
95°
73°
16
97°
74°
17
98°
73°
18
96°
71°
19
97°
72°
20
97°
69°
21
92°
68°
22
90°
67°
23
91°
68°
24
95°
70°
25
97°
68°
26
96°
68°
27
97°
69°
28
96°
72°
29
96°
71°
30
95°
72°
31
94°
68°
1
94°
68°
2
93°
67°
3
94°
67°
4
94°
72°
5
95°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Celina
Celina's August 2026 forecast shows daily high temperatures ranging from 90° to 100°, with overnight lows between 67° and 78°. The average high for August is 97° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Celina. See also: September | October | November.