S
M
T
W
T
F
S
26
81°
62°
27
84°
54°
28
81°
60°
29
82°
60°
30
82°
58°
31
90°
53°
1
77°
61°
2
76°
53°
3
86°
50°
4
90°
50°
5
90°
53°
6
96°
56°
7
92°
55°
8
90°
55°
9
85°
58°
10
82°
58°
11
84°
57°
12
81°
63°
13
83°
60°
14
81°
62°
15
73°
61°
16
82°
62°
17
86°
58°
18
85°
57°
19
87°
57°
20
93°
56°
21
76°
59°
22
78°
58°
23
79°
64°
24
94°
52°
25
91°
59°
26
83°
59°
27
80°
61°
28
79°
56°
29
71°
52°
30
75°
53°
31
83°
60°
1
73°
56°
2
65°
49°
3
68°
50°
4
71°
48°
5
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stevenson
Stevenson's August 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 48° and 60°. The average high for August is 73° with an average low of 53°. 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 Stevenson. See also: September | October | November.