S
M
T
W
T
F
S
26
74°
47°
27
81°
48°
28
81°
48°
29
75°
47°
30
71°
42°
31
72°
45°
1
75°
47°
2
81°
48°
3
79°
38°
4
75°
38°
5
74°
43°
6
83°
46°
7
84°
47°
8
83°
39°
9
74°
41°
10
73°
37°
11
73°
41°
12
74°
41°
13
73°
42°
14
76°
35°
15
71°
39°
16
74°
42°
17
78°
41°
18
79°
44°
19
80°
40°
20
71°
40°
21
72°
39°
22
71°
34°
23
68°
33°
24
68°
35°
25
70°
38°
26
74°
39°
27
78°
42°
28
77°
35°
29
68°
35°
30
70°
39°
31
74°
41°
1
77°
40°
2
74°
43°
3
76°
42°
4
75°
39°
5
74°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kalispell Northwest
Kalispell Northwest's August 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 33° and 48°. The average high for August is 75° with an average low of 41°. 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 Kalispell Northwest. See also: September | October | November.
