S
M
T
W
T
F
S
26
68°
54°
27
68°
55°
28
68°
57°
29
63°
55°
30
68°
54°
31
68°
54°
1
72°
54°
2
68°
54°
3
72°
48°
4
70°
48°
5
71°
53°
6
66°
54°
7
63°
52°
8
68°
50°
9
63°
54°
10
64°
50°
11
64°
50°
12
59°
52°
13
57°
54°
14
64°
54°
15
63°
54°
16
68°
54°
17
64°
50°
18
64°
50°
19
66°
54°
20
66°
54°
21
66°
52°
22
70°
55°
23
72°
54°
24
68°
50°
25
68°
55°
26
73°
54°
27
72°
58°
28
64°
55°
29
68°
50°
30
68°
52°
31
65°
53°
1
69°
54°
2
70°
55°
3
66°
52°
4
66°
51°
5
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fortuna
Fortuna's August 2026 forecast shows daily high temperatures ranging from 65° to 70°, with overnight lows between 50° and 55°. The average high for August is 67° with an average low of 52°. 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 Fortuna. See also: September | October | November.
