S
M
T
W
T
F
S
30
73°
56°
31
72°
55°
1
77°
49°
2
72°
49°
3
72°
50°
4
73°
48°
5
72°
48°
6
74°
53°
7
76°
53°
8
71°
52°
9
76°
53°
10
73°
53°
11
75°
52°
12
76°
52°
13
75°
53°
14
76°
52°
15
76°
51°
16
75°
45°
17
70°
48°
18
66°
52°
19
73°
51°
20
75°
51°
21
74°
48°
22
73°
42°
23
Hist. Avg.
67°
46°
24
Hist. Avg.
67°
46°
25
Hist. Avg.
67°
45°
26
Hist. Avg.
66°
45°
27
Hist. Avg.
66°
44°
28
Hist. Avg.
65°
44°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
64°
43°
1
Hist. Avg.
64°
43°
2
Hist. Avg.
64°
42°
3
Hist. Avg.
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fremont
Fremont's September 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 42° and 56°. The average high for September is 74° with an average low of 51°. 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.
