S
M
T
W
T
F
S
26
81°
54°
27
81°
55°
28
83°
55°
29
82°
54°
30
81°
55°
31
81°
54°
1
85°
55°
2
83°
55°
3
87°
54°
4
90°
54°
5
84°
53°
6
84°
54°
7
82°
51°
8
90°
55°
9
91°
55°
10
91°
54°
11
90°
55°
12
90°
55°
13
89°
54°
14
87°
43°
15
80°
43°
16
81°
44°
17
84°
50°
18
89°
49°
19
86°
50°
20
90°
49°
21
87°
47°
22
87°
54°
23
92°
52°
24
88°
47°
25
84°
46°
26
89°
53°
27
91°
51°
28
86°
48°
29
88°
42°
30
77°
41°
31
77°
41°
1
83°
46°
2
85°
49°
3
87°
49°
4
87°
47°
5
75°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Thompson Falls
Thompson Falls's August 2026 forecast shows daily high temperatures ranging from 75° to 92°, with overnight lows between 39° and 55°. The average high for August is 85° with an average low of 50°. 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 Thompson Falls. See also: September | October | November.