S
M
T
W
T
F
S
26
85°
49°
27
85°
44°
28
53°
45°
29
85°
44°
30
89°
50°
31
89°
46°
1
93°
49°
2
70°
48°
3
71°
44°
4
77°
39°
5
83°
38°
6
85°
41°
7
N/A
8
92°
47°
9
90°
48°
10
89°
49°
11
89°
50°
12
80°
51°
13
75°
52°
14
82°
49°
15
85°
52°
16
84°
52°
17
84°
51°
18
80°
52°
19
83°
53°
20
80°
46°
21
84°
52°
22
83°
51°
23
83°
51°
24
81°
46°
25
72°
44°
26
81°
51°
27
83°
51°
28
82°
50°
29
83°
50°
30
80°
50°
31
79°
51°
1
78°
49°
2
69°
47°
3
70°
45°
4
75°
48°
5
79°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Kalispell
Kalispell's August 2026 forecast shows daily high temperatures ranging from 69° to 92°, with overnight lows between 44° and 53°. The average high for August is 81° 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 Kalispell. See also: September | October | November.