S
M
T
W
T
F
S
30
73°
48°
31
76°
50°
1
79°
46°
2
72°
45°
3
71°
47°
4
75°
54°
5
75°
54°
6
79°
48°
7
75°
51°
8
72°
52°
9
70°
52°
10
77°
51°
11
74°
51°
12
72°
52°
13
69°
49°
14
69°
44°
15
67°
43°
16
67°
42°
17
68°
49°
18
70°
48°
19
74°
49°
20
76°
50°
21
71°
44°
22
72°
43°
23
65°
47°
24
67°
41°
25
70°
39°
26
65°
46°
27
71°
46°
28
66°
47°
29
68°
47°
30
Hist. Avg.
64°
41°
1
Hist. Avg.
64°
40°
2
Hist. Avg.
64°
40°
3
Hist. Avg.
63°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fillmore
Fillmore's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 39° and 54°. The average high for September is 71° with an average low of 48°. 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 Fillmore. See also: October | November | December.
