S
M
T
W
T
F
S
26
89°
78°
27
89°
77°
28
90°
78°
29
91°
78°
30
92°
79°
31
91°
79°
1
90°
78°
2
91°
77°
3
90°
76°
4
90°
76°
5
92°
76°
6
91°
77°
7
90°
78°
8
91°
77°
9
91°
75°
10
90°
76°
11
91°
77°
12
90°
76°
13
89°
75°
14
89°
76°
15
90°
77°
16
89°
76°
17
89°
77°
18
90°
76°
19
91°
76°
20
91°
77°
21
92°
76°
22
91°
75°
23
90°
75°
24
91°
76°
25
92°
75°
26
89°
76°
27
90°
75°
28
91°
76°
29
93°
77°
30
91°
77°
31
90°
76°
1
89°
75°
2
89°
75°
3
90°
76°
4
89°
76°
5
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Osceola
Osceola's August 2026 forecast shows daily high temperatures ranging from 89° to 93°, with overnight lows between 75° and 79°. The average high for August is 90° with an average low of 76°. 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 Osceola. See also: September | October | November.