S
M
T
W
T
F
S
30
70°
57°
31
72°
55°
1
72°
50°
2
64°
57°
3
75°
63°
4
66°
54°
5
70°
54°
6
79°
55°
7
73°
57°
8
63°
51°
9
66°
50°
10
67°
58°
11
69°
47°
12
71°
57°
13
72°
56°
14
78°
61°
15
71°
51°
16
66°
50°
17
66°
51°
18
66°
50°
19
67°
51°
20
68°
50°
21
67°
52°
22
67°
51°
23
66°
51°
24
67°
50°
25
66°
47°
26
64°
47°
27
64°
48°
28
65°
49°
29
64°
48°
30
64°
48°
1
63°
43°
2
64°
48°
3
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ampthill
Ampthill's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 43° and 61°. The average high for September is 67° with an average low of 51°. 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 Ampthill. See also: October | November | December.