S
M
T
W
T
F
S
26
88°
74°
27
89°
75°
28
88°
75°
29
86°
74°
30
86°
74°
31
89°
75°
1
90°
74°
2
88°
75°
3
89°
72°
4
89°
74°
5
88°
72°
6
84°
73°
7
87°
68°
8
84°
67°
9
84°
68°
10
85°
68°
11
86°
73°
12
89°
73°
13
89°
72°
14
88°
67°
15
85°
67°
16
83°
72°
17
83°
72°
18
86°
67°
19
84°
66°
20
82°
66°
21
83°
67°
22
84°
66°
23
85°
66°
24
84°
65°
25
83°
66°
26
85°
70°
27
87°
71°
28
86°
72°
29
88°
72°
30
87°
70°
31
85°
64°
1
82°
63°
2
79°
64°
3
80°
64°
4
80°
65°
5
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stevensville
Stevensville's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 63° and 75°. The average high for August is 85° 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 Stevensville. See also: September | October | November.