S
M
T
W
T
F
S
30
81°
66°
31
85°
67°
1
85°
65°
2
82°
63°
3
81°
62°
4
82°
61°
5
79°
60°
6
80°
60°
7
80°
63°
8
79°
61°
9
78°
61°
10
75°
52°
11
74°
57°
12
76°
57°
13
77°
58°
14
77°
58°
15
76°
56°
16
69°
54°
17
73°
57°
18
76°
56°
19
74°
56°
20
74°
55°
21
75°
56°
22
76°
56°
23
75°
54°
24
70°
52°
25
66°
51°
26
68°
52°
27
72°
52°
28
73°
53°
29
73°
53°
30
72°
52°
1
72°
52°
2
71°
51°
3
68°
52°
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 66° to 85°, with overnight lows between 51° and 67°. The average high for September is 76° with an average low of 57°. 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.
