S
M
T
W
T
F
S
30
82°
60°
31
82°
60°
1
81°
59°
2
81°
59°
3
82°
60°
4
82°
59°
5
81°
59°
6
81°
58°
7
82°
58°
8
78°
56°
9
78°
56°
10
79°
55°
11
80°
56°
12
76°
54°
13
68°
47°
14
66°
45°
15
66°
52°
16
67°
50°
17
66°
47°
18
77°
44°
19
79°
40°
20
75°
39°
21
63°
38°
22
64°
39°
23
65°
47°
24
68°
51°
25
70°
51°
26
69°
52°
27
72°
50°
28
72°
45°
29
70°
38°
30
60°
35°
1
60°
32°
2
55°
35°
3
58°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barron
Barron's September 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 32° and 60°. The average high for September is 72° 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 Barron. See also: October | November | December.