S
M
T
W
T
F
S
30
79°
58°
31
72°
50°
1
77°
48°
2
84°
50°
3
79°
59°
4
84°
54°
5
81°
64°
6
88°
63°
7
81°
55°
8
72°
55°
9
77°
52°
10
84°
50°
11
63°
48°
12
59°
43°
13
68°
37°
14
57°
48°
15
61°
39°
16
59°
37°
17
70°
30°
18
75°
59°
19
66°
48°
20
59°
46°
21
70°
39°
22
72°
41°
23
61°
54°
24
82°
54°
25
77°
50°
26
72°
55°
27
61°
43°
28
70°
48°
29
70°
45°
30
63°
41°
1
61°
36°
2
70°
36°
3
64°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fortuna
Fortuna's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Fortuna. See also: October | November | December.
