S
M
T
W
T
F
S
26
91°
70°
27
92°
70°
28
92°
69°
29
91°
69°
30
92°
70°
31
91°
69°
1
89°
68°
2
84°
65°
3
85°
68°
4
83°
68°
5
84°
67°
6
85°
68°
7
85°
67°
8
86°
66°
9
85°
67°
10
86°
67°
11
86°
66°
12
85°
67°
13
85°
67°
14
91°
66°
15
92°
66°
16
88°
64°
17
86°
65°
18
89°
66°
19
85°
62°
20
85°
59°
21
84°
58°
22
83°
59°
23
84°
59°
24
84°
58°
25
85°
60°
26
84°
61°
27
87°
60°
28
88°
64°
29
90°
64°
30
90°
63°
31
89°
63°
1
88°
62°
2
87°
62°
3
83°
59°
4
82°
57°
5
82°
61°
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 82° to 92°, with overnight lows between 57° and 70°. The average high for August is 87° with an average low of 64°. 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.