S
M
T
W
T
F
S
30
82°
67°
31
91°
70°
1
97°
74°
2
95°
71°
3
92°
73°
4
92°
73°
5
84°
72°
6
79°
66°
7
79°
62°
8
86°
71°
9
80°
68°
10
77°
59°
11
80°
63°
12
84°
66°
13
82°
66°
14
76°
62°
15
74°
60°
16
74°
60°
17
76°
58°
18
76°
59°
19
77°
56°
20
75°
55°
21
74°
60°
22
70°
60°
23
72°
59°
24
78°
60°
25
78°
60°
26
77°
59°
27
77°
60°
28
79°
61°
29
78°
61°
30
78°
60°
1
75°
54°
2
71°
49°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Burnham
Burnham's September 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 45° and 71°. The average high for September is 77° 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 Burnham. See also: October | November | December.