S
M
T
W
T
F
S
30
91°
62°
31
93°
66°
1
95°
67°
2
97°
69°
3
98°
69°
4
99°
71°
5
95°
72°
6
N/A
7
85°
65°
8
89°
66°
9
91°
71°
10
85°
61°
11
81°
61°
12
84°
65°
13
86°
63°
14
82°
62°
15
81°
59°
16
81°
56°
17
82°
61°
18
81°
57°
19
78°
56°
20
76°
55°
21
83°
60°
22
76°
60°
23
80°
59°
24
82°
61°
25
82°
61°
26
81°
60°
27
82°
60°
28
82°
59°
29
81°
60°
30
81°
59°
1
80°
57°
2
78°
49°
3
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Stanford
Stanford's September 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 46° and 71°. The average high for September is 81° with an average low of 60°. 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 Stanford. See also: October | November | December.