S
M
T
W
T
F
S
30
79°
58°
31
73°
55°
1
72°
55°
2
75°
58°
3
75°
59°
4
78°
59°
5
79°
58°
6
77°
59°
7
79°
50°
8
72°
59°
9
76°
47°
10
77°
46°
11
68°
50°
12
72°
57°
13
74°
45°
14
75°
41°
15
66°
43°
16
66°
43°
17
67°
46°
18
67°
53°
19
66°
52°
20
72°
51°
21
74°
51°
22
76°
53°
23
77°
52°
24
76°
51°
25
75°
53°
26
75°
41°
27
71°
39°
28
67°
37°
29
61°
39°
30
62°
38°
1
61°
39°
2
63°
40°
3
65°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fremont
Fremont's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 37° and 59°. The average high for September is 72° with an average low of 49°. 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 Fremont. See also: October | November | December.
