S
M
T
W
T
F
S
30
78°
57°
31
73°
57°
1
75°
59°
2
77°
59°
3
80°
59°
4
83°
60°
5
81°
61°
6
79°
60°
7
80°
59°
8
82°
60°
9
81°
58°
10
78°
62°
11
81°
58°
12
83°
60°
13
83°
61°
14
84°
61°
15
84°
60°
16
83°
60°
17
81°
59°
18
76°
59°
19
75°
58°
20
75°
56°
21
76°
54°
22
77°
54°
23
76°
58°
24
75°
55°
25
75°
58°
26
76°
54°
27
75°
53°
28
75°
56°
29
79°
57°
30
75°
54°
1
76°
57°
2
74°
56°
3
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Milpitas
Milpitas's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 53° and 62°. The average high for September is 78° with an average low of 58°. 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 Milpitas. See also: October | November | December.
