S
M
T
W
T
F
S
26
79°
52°
27
80°
53°
28
81°
52°
29
80°
52°
30
79°
53°
31
79°
52°
1
82°
53°
2
80°
53°
3
85°
54°
4
88°
53°
5
83°
52°
6
84°
53°
7
79°
51°
8
87°
53°
9
89°
54°
10
88°
53°
11
89°
53°
12
87°
52°
13
86°
52°
14
84°
41°
15
76°
41°
16
78°
42°
17
81°
46°
18
85°
45°
19
80°
49°
20
85°
48°
21
84°
45°
22
84°
50°
23
86°
49°
24
84°
42°
25
80°
44°
26
85°
50°
27
86°
49°
28
80°
46°
29
83°
39°
30
72°
38°
31
73°
39°
1
77°
43°
2
80°
45°
3
82°
45°
4
82°
43°
5
70°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Columbia Falls
Columbia Falls's August 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 36° and 54°. The average high for August is 82° with an average low of 48°. 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 Columbia Falls. See also: September | October | November.
