S
M
T
W
T
F
S
30
79°
60°
31
82°
63°
1
86°
58°
2
83°
57°
3
79°
56°
4
80°
58°
5
80°
64°
6
83°
63°
7
86°
62°
8
79°
63°
9
78°
63°
10
81°
61°
11
82°
60°
12
81°
61°
13
79°
59°
14
76°
54°
15
76°
54°
16
75°
53°
17
75°
54°
18
76°
58°
19
78°
59°
20
79°
60°
21
80°
56°
22
76°
52°
23
73°
57°
24
72°
58°
25
78°
52°
26
72°
55°
27
76°
56°
28
77°
55°
29
Hist. Avg.
74°
56°
30
Hist. Avg.
74°
56°
1
Hist. Avg.
73°
55°
2
Hist. Avg.
73°
55°
3
Hist. Avg.
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Barrington
Barrington's September 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 52° and 64°. The average high for September is 79° with an average low of 58°. 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 Barrington. See also: October | November | December.
