S
M
T
W
T
F
S
30
73°
61°
31
72°
57°
1
73°
52°
2
70°
57°
3
79°
64°
4
N/A
5
71°
54°
6
79°
60°
7
71°
54°
8
68°
49°
9
66°
47°
10
67°
55°
11
67°
51°
12
65°
47°
13
66°
50°
14
67°
54°
15
69°
53°
16
70°
52°
17
68°
50°
18
64°
46°
19
65°
47°
20
67°
51°
21
68°
52°
22
68°
51°
23
67°
51°
24
68°
50°
25
67°
47°
26
64°
46°
27
64°
46°
28
65°
49°
29
64°
48°
30
65°
48°
1
64°
43°
2
65°
48°
3
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Longstanton
Longstanton's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 43° and 60°. The average high for September is 67° with an average low of 50°. 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 Longstanton. See also: October | November | December.