S
M
T
W
T
F
S
26
78°
58°
27
79°
59°
28
79°
58°
29
81°
59°
30
80°
60°
31
81°
60°
1
80°
59°
2
80°
58°
3
76°
56°
4
76°
56°
5
78°
58°
6
79°
58°
7
78°
57°
8
78°
58°
9
76°
59°
10
79°
58°
11
80°
58°
12
80°
57°
13
78°
57°
14
81°
57°
15
81°
52°
16
80°
56°
17
78°
57°
18
79°
58°
19
80°
57°
20
75°
55°
21
79°
51°
22
72°
48°
23
74°
48°
24
76°
49°
25
76°
46°
26
73°
46°
27
71°
47°
28
70°
46°
29
68°
45°
30
70°
46°
31
69°
44°
1
68°
44°
2
68°
45°
3
69°
45°
4
70°
46°
5
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Island Falls
Island Falls's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 44° and 60°. The average high for August is 76° with an average low of 53°. 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 Island Falls. See also: September | October | November.