S
M
T
W
T
F
S
30
60°
43°
31
69°
42°
1
75°
55°
2
69°
46°
3
65°
51°
4
65°
47°
5
60°
44°
6
64°
46°
7
71°
47°
8
66°
44°
9
66°
45°
10
62°
47°
11
66°
44°
12
67°
45°
13
67°
46°
14
64°
43°
15
65°
45°
16
69°
50°
17
68°
49°
18
69°
49°
19
70°
48°
20
67°
48°
21
69°
47°
22
69°
48°
23
68°
47°
24
66°
46°
25
65°
46°
26
67°
47°
27
66°
47°
28
64°
46°
29
65°
45°
30
63°
45°
1
64°
41°
2
57°
37°
3
56°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnaby River
Barnaby River's September 2026 forecast shows daily high temperatures ranging from 56° to 71°, with overnight lows between 37° and 51°. The average high for September is 66° with an average low of 46°. 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 Barnaby River. See also: October | November | December.