S
M
T
W
T
F
S
30
70°
63°
31
86°
59°
1
82°
52°
2
86°
55°
3
81°
61°
4
70°
61°
5
73°
61°
6
84°
59°
7
81°
59°
8
81°
64°
9
73°
52°
10
79°
46°
11
86°
59°
12
70°
48°
13
68°
41°
14
59°
37°
15
67°
39°
16
66°
48°
17
71°
50°
18
63°
54°
19
64°
51°
20
64°
51°
21
66°
49°
22
67°
51°
23
66°
50°
24
68°
48°
25
68°
48°
26
67°
51°
27
66°
47°
28
63°
43°
29
64°
49°
30
65°
47°
1
67°
48°
2
64°
48°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnum
Barnum's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 39° and 54°. The average high for September is 66° with an average low of 48°. 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 Barnum. See also: October | November | December.
