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°
51°
15
68°
40°
16
67°
47°
17
71°
47°
18
66°
54°
19
67°
53°
20
64°
48°
21
68°
47°
22
67°
46°
23
66°
46°
24
68°
52°
25
71°
50°
26
73°
51°
27
69°
51°
28
59°
49°
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 59° to 73°, with overnight lows between 40° and 54°. The average high for September is 66° with an average low of 49°. 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.
