S
M
T
W
T
F
S
26
84°
60°
27
83°
59°
28
81°
58°
29
81°
58°
30
80°
57°
31
80°
58°
1
72°
57°
2
73°
58°
3
80°
57°
4
79°
57°
5
77°
56°
6
77°
56°
7
75°
57°
8
79°
57°
9
80°
58°
10
80°
57°
11
81°
57°
12
77°
56°
13
79°
55°
14
80°
56°
15
78°
47°
16
79°
46°
17
71°
44°
18
70°
45°
19
71°
45°
20
71°
53°
21
77°
53°
22
78°
54°
23
77°
54°
24
78°
53°
25
78°
45°
26
71°
45°
27
66°
46°
28
75°
52°
29
78°
54°
30
76°
48°
31
78°
41°
1
68°
45°
2
70°
50°
3
68°
51°
4
76°
43°
5
69°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kettle Falls
Kettle Falls's August 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 41° and 60°. The average high for August is 76° with an average low of 52°. 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 Kettle Falls. See also: September | October | November.