S
M
T
W
T
F
S
26
85°
65°
27
86°
66°
28
85°
67°
29
82°
66°
30
80°
66°
31
85°
65°
1
85°
67°
2
84°
65°
3
86°
65°
4
86°
66°
5
85°
64°
6
82°
65°
7
80°
64°
8
80°
59°
9
80°
60°
10
80°
59°
11
81°
65°
12
83°
65°
13
85°
64°
14
85°
59°
15
80°
58°
16
79°
60°
17
81°
64°
18
78°
58°
19
81°
58°
20
81°
59°
21
82°
59°
22
82°
58°
23
81°
57°
24
82°
56°
25
80°
56°
26
80°
61°
27
82°
62°
28
77°
61°
29
82°
63°
30
82°
61°
31
81°
54°
1
78°
53°
2
74°
54°
3
74°
54°
4
75°
54°
5
74°
53°
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 74° to 86°, with overnight lows between 53° and 67°. The average high for August is 81° with an average low of 61°. 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.
