S
M
T
W
T
F
S
26
86°
76°
27
86°
76°
28
87°
79°
29
88°
79°
30
88°
78°
31
86°
79°
1
87°
78°
2
88°
79°
3
89°
79°
4
90°
78°
5
90°
79°
6
89°
79°
7
89°
78°
8
90°
79°
9
89°
79°
10
89°
78°
11
88°
79°
12
89°
79°
13
89°
78°
14
90°
79°
15
88°
79°
16
90°
78°
17
91°
77°
18
92°
78°
19
91°
77°
20
92°
78°
21
89°
77°
22
92°
76°
23
92°
75°
24
91°
77°
25
92°
75°
26
92°
74°
27
90°
74°
28
89°
75°
29
90°
73°
30
89°
74°
31
89°
74°
1
90°
73°
2
88°
75°
3
91°
74°
4
91°
77°
5
90°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stephenville
Stephenville's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 73° and 79°. The average high for August is 89° with an average low of 77°. 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 Stephenville. See also: September | October | November.
