S
M
T
W
T
F
S
26
86°
58°
27
88°
58°
28
89°
57°
29
85°
55°
30
88°
53°
31
94°
55°
1
88°
59°
2
73°
53°
3
79°
46°
4
84°
48°
5
90°
50°
6
94°
54°
7
96°
55°
8
87°
58°
9
90°
56°
10
88°
55°
11
91°
57°
12
87°
56°
13
86°
55°
14
85°
57°
15
88°
59°
16
89°
58°
17
85°
57°
18
85°
57°
19
90°
58°
20
89°
59°
21
88°
58°
22
82°
52°
23
84°
57°
24
86°
57°
25
87°
58°
26
88°
59°
27
87°
58°
28
86°
58°
29
85°
57°
30
78°
56°
31
78°
55°
1
81°
56°
2
74°
55°
3
76°
55°
4
79°
50°
5
81°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Liberty Lake
Liberty Lake's August 2026 forecast shows daily high temperatures ranging from 74° to 91°, with overnight lows between 50° and 59°. The average high for August is 85° with an average low of 56°. 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 Liberty Lake. See also: September | October | November.