S
M
T
W
T
F
S
30
65°
52°
31
64°
51°
1
66°
52°
2
67°
55°
3
68°
56°
4
68°
51°
5
66°
50°
6
64°
53°
7
67°
53°
8
68°
51°
9
68°
55°
10
67°
55°
11
68°
54°
12
68°
51°
13
65°
48°
14
63°
52°
15
62°
53°
16
63°
55°
17
64°
54°
18
67°
54°
19
66°
53°
20
66°
54°
21
68°
50°
22
66°
48°
23
61°
47°
24
61°
48°
25
62°
48°
26
64°
49°
27
63°
50°
28
61°
53°
29
64°
54°
30
64°
52°
1
65°
53°
2
66°
52°
3
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnham
Barnham's September 2026 forecast shows daily high temperatures ranging from 60° to 68°, with overnight lows between 46° and 56°. The average high for September is 65° with an average low of 52°. 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 Barnham. See also: October | November | December.
