S
M
T
W
T
F
S
30
86°
56°
31
81°
67°
1
91°
70°
2
74°
69°
3
87°
70°
4
87°
72°
5
81°
63°
6
80°
59°
7
79°
58°
8
84°
55°
9
88°
62°
10
88°
72°
11
81°
62°
12
82°
56°
13
83°
69°
14
76°
53°
15
53°
49°
16
82°
54°
17
84°
68°
18
83°
66°
19
72°
60°
20
75°
64°
21
71°
63°
22
63°
53°
23
67°
51°
24
64°
50°
25
72°
55°
26
69°
55°
27
74°
55°
28
74°
58°
29
74°
57°
30
75°
55°
1
72°
54°
2
71°
52°
3
68°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barclay
Barclay's September 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 50° and 58°. The average high for September is 70° with an average low of 54°. 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 Barclay. See also: October | November | December.