S
M
T
W
T
F
S
30
70°
53°
31
71°
54°
1
69°
53°
2
68°
52°
3
69°
53°
4
69°
50°
5
68°
49°
6
68°
48°
7
67°
51°
8
67°
52°
9
66°
51°
10
68°
51°
11
68°
52°
12
69°
51°
13
68°
47°
14
68°
50°
15
67°
51°
16
66°
51°
17
67°
50°
18
62°
50°
19
63°
45°
20
63°
50°
21
63°
49°
22
66°
50°
23
Hist. Avg.
62°
47°
24
Hist. Avg.
62°
46°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
61°
46°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
61°
46°
30
Hist. Avg.
60°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
60°
45°
3
Hist. Avg.
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Leighton Buzzard
Leighton Buzzard's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 45° and 54°. 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 Leighton Buzzard. See also: October | November | December.