S
M
T
W
T
F
S
26
59°
45°
27
60°
45°
28
59°
47°
29
59°
45°
30
60°
45°
31
59°
46°
1
59°
47°
2
60°
46°
3
59°
46°
4
59°
49°
5
60°
48°
6
59°
48°
7
61°
46°
8
60°
45°
9
62°
48°
10
66°
49°
11
67°
50°
12
68°
49°
13
68°
50°
14
67°
49°
15
66°
44°
16
60°
46°
17
61°
49°
18
65°
47°
19
65°
45°
20
60°
43°
21
63°
48°
22
64°
43°
23
59°
43°
24
59°
44°
25
57°
43°
26
57°
43°
27
58°
47°
28
58°
47°
29
60°
44°
30
59°
46°
31
58°
44°
1
59°
41°
2
61°
41°
3
63°
47°
4
59°
45°
5
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gustavus
Gustavus's August 2026 forecast shows daily high temperatures ranging from 57° to 68°, with overnight lows between 41° and 50°. The average high for August is 61° with an average low of 46°. 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 Gustavus. See also: September | October | November.
