S
M
T
W
T
F
S
26
97°
73°
27
100°
72°
28
99°
70°
29
97°
74°
30
98°
72°
31
101°
71°
1
90°
69°
2
94°
67°
3
100°
70°
4
95°
71°
5
94°
69°
6
93°
72°
7
97°
72°
8
98°
72°
9
96°
68°
10
97°
68°
11
97°
73°
12
100°
75°
13
102°
77°
14
98°
74°
15
95°
74°
16
94°
72°
17
97°
68°
18
98°
70°
19
100°
72°
20
101°
72°
21
102°
73°
22
103°
74°
23
102°
74°
24
104°
74°
25
102°
75°
26
102°
71°
27
99°
73°
28
100°
69°
29
95°
68°
30
96°
68°
31
96°
68°
1
97°
70°
2
95°
68°
3
88°
63°
4
92°
69°
5
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in O'Donnell
O'Donnell's August 2026 forecast shows daily high temperatures ranging from 88° to 104°, with overnight lows between 63° and 75°. The average high for August is 98° with an average low of 70°. 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 O'Donnell. See also: September | October | November.
