S
M
T
W
T
F
S
30
79°
51°
31
76°
47°
1
72°
47°
2
71°
48°
3
71°
47°
4
72°
47°
5
71°
48°
6
70°
46°
7
71°
47°
8
71°
50°
9
70°
47°
10
69°
46°
11
70°
47°
12
70°
46°
13
69°
48°
14
70°
47°
15
68°
48°
16
69°
44°
17
68°
45°
18
68°
45°
19
67°
50°
20
71°
49°
21
66°
42°
22
65°
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 65° to 79°, with overnight lows between 42° and 51°. The average high for September is 70° with an average low of 47°. 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.
