S
M
T
W
T
F
S
30
103°
76°
31
103°
75°
1
104°
74°
2
102°
74°
3
101°
75°
4
101°
74°
5
102°
74°
6
101°
76°
7
101°
75°
8
100°
76°
9
99°
75°
10
99°
75°
11
100°
76°
12
101°
76°
13
103°
75°
14
104°
74°
15
103°
72°
16
98°
73°
17
98°
73°
18
101°
74°
19
102°
75°
20
103°
77°
21
103°
76°
22
104°
76°
23
104°
77°
24
102°
76°
25
97°
75°
26
94°
70°
27
95°
68°
28
94°
69°
29
95°
70°
30
94°
67°
1
93°
66°
2
93°
67°
3
96°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fortuna Foothills
Fortuna Foothills's September 2026 forecast shows daily high temperatures ranging from 93° to 104°, with overnight lows between 66° and 77°. The average high for September is 100° with an average low of 73°. 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 Foothills. See also: October | November | December.
