S
M
T
W
T
F
S
30
80°
60°
31
79°
58°
1
80°
55°
2
72°
54°
3
72°
55°
4
73°
52°
5
72°
52°
6
75°
58°
7
77°
57°
8
72°
57°
9
71°
56°
10
75°
57°
11
78°
56°
12
78°
57°
13
77°
57°
14
78°
47°
15
70°
46°
16
68°
47°
17
70°
46°
18
78°
53°
19
77°
53°
20
78°
52°
21
76°
46°
22
71°
42°
23
66°
41°
24
65°
42°
25
67°
51°
26
70°
50°
27
72°
50°
28
71°
49°
29
71°
50°
30
73°
49°
1
73°
50°
2
72°
42°
3
72°
40°
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 65° to 80°, with overnight lows between 40° and 60°. The average high for September is 73° 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.
